(its many year since i did pixelart, but though i would give it a try again, also i dont remeber how to upload a pic so you can zoom in on it... )
I changed some proportions, like the arms closest to you need to be longer, elbows reach about to the bellybutton. And the hands and feet needs to be bigger (but i suck at pixel hands, so hopefully you or someone else can make them better) I made the face less round.
I can tell what pose you try to do, but i think either the upper body or the legs needs to be faced differently, because right now its to twisted to be possible.