When I make Airedale quilts,
http://www.quiltingboard.com/t-50844-1.htm
I ask a friend, who is an artist and also an Airedale nut, to draw coloring book type pictures for me. I find they are the easiest thing for me to work with. I tell her that I want the simplest sketch possible. Perhaps you can find someone to draw the labs for you. Good luck.