 Here are the tool cinematerials that I'll be using for this tutorial. Pencil, pattern papers, fashion rollers, measuring tape, paper scissors, and a model. And these are the required measurements for the trouser pattern. Please do record them on a piece of paper for reference. Around the waist, get the smallest part of the waist. Number two, around the hip. Get the largest part of the hip. Number three, trouser or pant length. Get the measurement from waist to ankle or floor. Number four, knee. Get the measurements around the knee and from waist to knee. Number five, around the ankle. Get the circumference of your ankle, but this is optional. And lastly, number six, riser or crotch depth. Make it sure that you or your model is sitting down on a chair with straight body of course and ask someone to help you get the measurement from the waist to chair. And this is your riser or crotch depth measurement. Next, let's calculate the waist and hip arcs. For the waist, I added one inch for the movement allowance and I'll divide the sum by four. And I will calculate the quotient for the back and front waist arcs. For the back, I am going to subtract 0.25 or 2.8 of an inch and the difference is my back waist arc. For the front, I am going to add 0.25 or 2.8 of an inch and the sum is my front waist arc. Please pause the video for the centimeter conversion and please use your own measurements. For the hip arcs, it's the opposite of the waist arcs. I also added one inch for the movement allowance and divide the sum by four. And next, I will calculate the quotient for the back and front hip arcs. For the back, I will add 0.25 or 2.8 of an inch and the sum is my back hip arc. And for the front, I will subtract 0.25 or 2.8 of an inch and the difference is my front hip arc. Again, please use and record your own measurements. These are only example calculations. So now that we are done with the calculations, we can now move on to the pattern drafting. First, let's establish our first three lines. On the top of your paper, let's establish first the waistline. Draw a horizontal line for the waistline. Next, from the waistline, square a vertical line for the out seam or pant length. Use the trouser or pant length measurement for this one. And this should also be centered. And lastly, draw another horizontal line for the ankle or floor length. Again, use the trouser length measurement to establish this line. Next, from the waistline, mark down the crotch depth or riser measurement and square out a horizontal line. For the hipline, divide the waist to crotch depth measurement by 3. And mark up the result or the measurement from the crotch depth or riser line and square out another horizontal line. And this is the hipline. For the knee length, get the measurement from crotch depth to the floor length and divide it by 2. And mark up this measurement from the floor length and add 1 inch or 2.5 centimeters and square out a horizontal line. So this is my crotch depth, hipline, waistline and the middle line is the out seam or trouser length line. And this is the back part and the front part. From the out seam line, mark out the back hip arc measurement. Please refer to your measurement sheet. I'm going to mark the back hip arc measurement on the crotch depth line, hipline and waistline. And next, I'm going to square out a vertical line for the center back. Next, for the front part, I'm going to mark out the front hip arc measurement and I'm going to mark it at the crotch depth, hipline and the waistline. And square out a vertical line for the center front. Notice that the front area is shorter than the back and that is normal. Next, I'm going to divide the weave of the back crotch depth line by 2 and the result is for the back crotch level. Extend the crotch depth line and mark in the result from center back line. Again, this is the back crotch level. Next, I am going to divide the waistline to crotch depth by 2 and mark it from the crotch depth line, like this one. We will use this mark for later. Next, I'm going to divide the weave of the front crotch depth line by 4. The result is for the front crotch level. And mark this measurement from center front line. Again, this is the front crotch level. Next, I'm going to divide the waistline to crotch depth by 2 and mark it up from crotch depth line. Next, from center back, mark in 6 eighths of an inch or 2 centimeter. And mark up 4 eighths of an inch or 1.25 centimeters. From these marks, I'm going to mark in the back waist arc plus 1 to 8 inches or 3.1 centimeters for dark intake. For the new center back, mark in 3 inches or 7.5 centimeters. And mark in the dart measurement which is 1 to 8 inches or 3.1 centimeters. Also, mark the center of the dart. Next, square a vertical line at the center of the dart. And from the waistline, mark down the length of the dart which is 4 to 8 inches or 11.2 centimeters. And complete the lines for the back dart. From the back crotch level, square out a 45 degree diagonal line, like this one. Mark in 2 inches or 5 centimeters. We will use this mark to curve out the back crotch. Next, connect the first 3 marks at the center back with a straight diagonal line. And connect last marks with a curve or French ruler. And this is the back crotch for my trouser. From the 4 eighths of an inch or 1.25 centimeters mark, I will withdraw the new back waistline using a curve ruler. Temporarily close the back dart. Find the perfect curve from the ruler and redraw the back waistline. And next, I will draw the hip curve from the side back waistline and blend it towards the out seam line. And there you have it. Next, from the center front, I will mark in the front waist arc plus 1 inch or 2.5 centimeters for darts intake. Again, from center front, mark in 3 inches or 7.5 centimeters. And from this mark, I will mark out the first dart. It's 4 eighths of an inch or 1.2 centimeters. Also, mark the center of the dart. And from the first dart, I will mark out 1 to 8 inches or 3.1 centimeters. This is the distance between the two darts. And from there, I will mark out the second dart. It's 4 eighths of an inch or 1.2 centimeters. Also, mark the center of the dart. From the center of the darts, I will square out two parallel vertical lines like this one. And the length of both front darts is 3 inches or 7.5 centimeters. And draft the lines for the dart legs. Next, from the front crotch level angle, I will draft a 45 degree diagonal line. And from this line, I will mark out 1 for 8 inches or 3.7 centimeters. Next, I will connect the front marks using a curve or French ruler. And this is the front crotch of my trouser pattern. And next, I will draw the hip curve from the side front waistline and blend it towards the out seam line. Next, from the center front, I will mark down 2 eighths of an inch or 0.6 centimeter. Next, to redraw the front waistline, temporarily close both front darts. And at the 2 eighths of an inch or 0.6 centimeter mark, I will withdraw the new front waistline using a curve ruler like this one. And there you go, now I am done with the upper part of my front trouser. For the back grain line, divide the weave from out seam line to the back crotch level by 2 and mark in this new measurement from the out seam. Do this mark until the floor length or the ankle line. Once you have completed the markings, square out a vertical line and this is the back grain line. It's also the same for the front grain line. Divide the weave from out seam line to the front crotch level by 2 and mark in this new measurement from the out seam line. Do this mark until the floor length or the ankle line. And once you have completed the markings, square out a vertical line and this is the front grain line. And this is how your trouser pattern should look like with grain lines. Next, mark in 4 eighths of an inch or 1.2 centimeters from both back and front crotch level. Next, at the ankle line from the back grain line, mark out 4 4 eighths inches or 11.2 centimeters both sides like this one. And connect a diagonal line from the 4 eighths of an inch or 1.2 centimeters mark at back crotch level to the ankle line mark. Like this one. And for the other mark, connect a diagonal line blending towards the hip line. And from the original back crotch level, draw a curved line blending towards the diagonal line. For the front trouser at the ankle line from the front grain line, mark out 4 inches or 10 centimeters for foot entry. And connect diagonal lines same procedure as we did earlier with the back trouser. And from the original front crotch level, draw a curved line blending towards the diagonal line like this one. And we are done. So we have completed the trouser pattern and congratulations to you if you have finished it by yourself. The trouser pattern can be a bit tricky but with more practice, you can master it. So this is my mock-up for the trouser and as you guys can see, I didn't put any zipper at the center front and there's no waistband. This is only a mock-up to test fit the trouser pattern on a model. By the way guys, comment down below if you have any questions and I'll make it sure to answer as quickly as possible. And don't forget to give this video a huge thumbs up and subscribe to my YouTube channel Alamo Delist. And I'll see you guys again on the next tutorial. A bientol!