This video is a quick introduction to how I go about tracing my leather patterns into Illustrator, it is not intended to be a comprehensive Illustrator tutorial and if you want to learn to do this properly you will need to get a good book or read some on-line tutorials!
I trace my patterns to make them accurate, printable, reproducible, easily adjustable and laser cutter ready.
p.s. I know I say 'ellipses' instead of 'ellipse' in the video a few times, I'm aware they're not the same thing I don't know why I said it other than I sometimes say stupid things when I'm recording myself!!