Two words: transfer paper. Why did it take me so long to discover this? I love to draw, but I do not love to waste endless hours measuring and re-measuring and doing tricky, strange math to increase sizes by incremental percentages and then having to redraw things a second or third time when it turns out everything was wrong... Oversize copies and transfer paper have saved me SO much time, so I can get to the part I really love-- painting. My favorite is the White Saral Free Wax Transfer Paper from Blick/Utrecht. Go enjoy your work again and let your hair stay in your head where it belongs.