refined sketch (first critique)

hi. been studying form briefly from stan lee's "How to draw comics the marvel way" book and did some 1-min sketches here. sadly lost most of the models so i only was able to return and refine a few. here is my favorite. I don't have the original image so apologies but hopefully i can receive some advice anyways. i do not draw fat people often so this was a challenge but i enjoyed the process of simplifying the pose into shapes and building from there.