Ya emulated your ref and subject well. The stippling helps hide the rough marker usage in the costume. The black and orange could had been smoother by layering the colors a few times (2~3) rather than just filling in once. Or ya could had color in a manner that went with the shapes more.
Hmmm, I find that composition quite interesting, but there are some issues with the anatomy. His arms are way too short, or rather it looks like his pelvis bone is missing. Also, the painful pose could be corrected by placing the pelvis in the right spot. I would suggest going to www.posemaniacs.com to help you get a better understanding of how the torso and pelvis connect.
Thanks for the critique. I agree about the front arm looking a bit short. Hadn't notice the pelvis bone before. Thanks for pointing that out. You should check out the Julie Bell painting I used as a reference. There's a link in the description. Let me know what you think about how the pelvis bone appears in that piece compared to mine.
Coincidently I was using posemaniacs this morning while working on another piece. Had the site existed in 2000 when I first drew this piece I would definitely have found it helpful. Although I feel some of their poses can look a bit awkward and honestly prefer to use a drawing manikin.