Here are a few more things from that small sketchbook.
These first two are concept sketches for the "stone Generals" from the 2007 TMNT movie. I really like the pose in the second one.
This next drawing is my design idea for the "enviropacks" the Turtles wore in the "Fast Forward" season of the 4Kids TV show. They ended up being a lot sleeker and better integrated into the costumes in the actual show. -- PL