I think these are wonderful. The use of color and freedom of the lines are so not what I could do. I find it facinating that in such a small activity we can reveal so much about ourselves as artists and also I'm afraid about our personality. I need to finish the one I started, but maybe I think I'll dig our some thick markers and try your approach. Or maybe not. That makes my stomach hurt just thinking about it!
Write something about yourself. No need to be fancy, just an overview.