Overall, this is pretty good, considering the unique creative restriction of using less than 50 pen strokes that you imposed. However, I think the pose could be improved with some twist-and-turn or contrapposto (actually drawing a construction layer first might help) and the body could use more detail and volume, because ironically it looks a little bit flat. I would also spend some time practicing feet and hands, instead of concealing your inability to draw them by only drawing gloves, fists, or abstract goo characters with nub appendages; Milt Kahl has some great reference you can look at.

Or, you can ignore my advice, and instead listen to your own ego, which is what you are going to do. Well, I'm not the first, and I'm sure I won't be the last.