The VG Resource

No idea how to shade the mouth area and its making me crazy. Anyone mind telling me how to do this? I wanna finsh this but my pixel ADHD has me wanting ot start a new pixel everytime I open this up, and more than 2 sittings is way to long for this.

you made it look rather flat

since the helmet is a smooth surface and it's rather spherical, you could shade it like this

also since his helmet is made of a chromed surface, its shadows should use a drastic amount of contast between them

Thanks the the tips and visiuals guys, I really appreciate it. I'll get back on this with a more chrome like shading as soon as I can, school work is pretty heavy at the moment though.