 So, you know how to slap on materials, but you need more control. Not a problem. Let's say you have some gold materials set for the boots, but let's say you want to apply the blue armor material to the heel of the boots. What's the fastest way to do that? Well, assuming you drag a smart material onto a texture ID map like in the last tutorial, you'll see a mask on the right next to the material you want to apply. Right click and add paint. From here on the left side you'll see a polygon fill tool. Now the polygon tool has four modes. The first is a triangle, which allows you to left click and apply materials to the triangles of each quad on your mesh. You can also drag select if you want to quickly grab a group. Just remember that the drag tool goes through the entire object, so if you drag, it's going to go through everything. Also, you can left click on the object or the 2D texture map, so just pick whatever is easiest for you. Next is the quad mode, which is the exact same thing as the triangles, but for quads. The third mode is object mode, so if you have an object that is completely separate from everything. If you left click from here, it's just going to flood the entire object, which is super fast and useful. The last mode though is UV mode, which allows you to apply your work in a way that only targets things according to your UV. Because the boot is a single object, if we were to apply with object mode, it would flood the entire thing. But we only want to apply the blue armor to the heel. And luckily, I've already organized the UVs of the heel so that they're separate from the rest of the boot. So if you're on UV mode, you can actually just left click on the heel and it will automatically paint it based on the UVs. And again, you can click directly on the texture map or the 3D model itself. Last thing you should know is the layers function the exact same way they do in other art software like Photoshop or GIMP. They stack on top of each other. Remember, the original boot was completely gold, and we added a blue armor material on top, which is why we can see the blue. But if we drag the gold layer on top of the blue layer, you are not going to see blue anymore, because it's underneath the gold layer. So keep the order of your stack in mind when you're applying materials. Anyway, hope that helps, and as always, I hope you have a fantastic day, and I'll see you around.