Hey thesydneylad! Lookin pretty good! Definitely has that NES feel to it! I think this piece can stand to gain a lot if you step away from the pixels for a bit to consider the pose. I recommend sketching him out on paper first where you don't have to worry about things like resolution, color, etc. That way you can quickly try out different ideas without spending too much time or getting too attached to it. Then once you work that out, you can go ahead with pixels and start to make design compromises in favor of the color count and resolution.
The pose you're going for can be tricky! Here's my take on it:
Since the character design is mostly built of cylinders, you can break it down into easy-to-reason parts. You can see I tried a couple different poses with his back arm. Try a whole bunch of stuff until you find the look you're going for. I'd recommend you keep both his feet on the same plane so it feels more like a sprite that would belong in a platformer like megaman. Also keep in mind your action lines (marked in red here) while designing your pose to keep things feeling more powerful and dynamic. You can see that the whole pose has a sort of flow to it when you approach it this way.
