As I said in a previous post, I got my son to help me design the tiki stuff I made for the last Retro Romp. So here's is the method I worked out, so he could help me. He picked the features and I drew them out. Its an incredibly easy system, and a great one to do with the kids and for just general doodling. The diagrams I've drawn are a bit rough, but what the hey, you'll get my drift. This is tribal stuff, the rougher the better. And don't be fussing about the lines! Kids are constantly…