There are few things in life I hate more than adding seam allowance to a pattern; measure 1cm, mark, move along the pattern, measure 1cm, mark, move along the pattern, draw a line joining all the marks. Blah. I hate it, especially measuring around curves. So here is a trick that I discovered: find something circular that has a radius of the same measurement as your intended seam allowance (like a penny, or a wheel off a toy etc.) and if it doesn't already have one drill a hole in the center big enough for the tip of your pencil. Now, if you got the hole dead center, when you run the wheel along a ruler with a pencil in the hole you get a perfect seam allowance!
Pattern Drafting 0