Your linework is beautiful, and your knowledge of anatomy spot on. I love the second one you did for the pen competition. I love sketchy linework with lots of energy. MORE- fabulous.
I did this one on watercolor paper, I had planned on inking and coloring it, but I got carried away with penciling as usual, so I think I won't mess with it, I'll try something simpler.
I'll think about that Rigby, I don't normally draw Powergirl, if I remember, it was for a draw off over at Digital Webbing, just before the turner debacle.
Anyway, here's another figure sketch, spilled coffee on it though.