I just feel that Mewtwo looks a bit like a midget currently (No offense meant). I think that will better it slightly. As for the eyes, I cannot give any helpful comments as texturing is not my main point. I'll try to copy your head and mess around with it to see the best way to do it, or maybe a wild Karry can appear from the bushes to give you insight To move more then one object at once, hold shift and click the other shapes. If you click more then 3, it will start lagging, get stronger the more you click.
I made him taller, rounded out his stomach, and added texture to his chest and shadows to his mouth and under the chest. let me know what you think.
!IMPORTANT NOTE! Post your current progress on the beginning page by Editing the post with your first pictures. In doing this, people will see the progress right away, and some people won't think you haven't made any progress, thus not commenting, keep that in mind.