First off, great work on this character design, this is really one of the best detailled pixel works I have seen so far, especially regarding colors, lightsource and details.
But there are a few things I have noticed, too. Most noticeable for me was that you actually have no clear horizon line determined. If you look at the upper body you get the feeling that you look down on him, but if you compare that to the legs and boots and how they are placed, it looks like they are almost on eye level. Try to make the vanishing point more obvious, that would help alot.
Furthermore, the chest seems too flat compared to the pelvis and belly, a more round form ending in the throat would be nice. In order to make the character more lively, I think you should also help the viewer pay more attention to the head via more obvious highlights (hair?) and real eye contact. Regarding the right eye, you can see both sides of the sclera (the white part) and this looks strange in this small scale, as if the character was tired and liveless.

I have done a quick edit where I applied the things I have criticised. In my example, the horizon is far above the character, which is the easier method to go about it. I might have exaggerated slitghly with the leg, but you get the idea, haha. If you were aiming for a lower eye level and keep the boots as they are, you should definitely change the upper body, especially the shoulders so that you actually look up on them a little.



New design looks great so far!