You have a consistently high level of work Splatpixel. Love the forms you use for your image boundaries, its good to break out of rectangular borders. The hand needs some work though, its construction is wrong, but is finished very nicely (which almost hides the fact that it is wrong). Your level of polish on pieces is very high, and I think this is what covers some fairly basic errors which are made (this is both very good and a little bad). Lighting and shadowing is very good, few points though: the far shoulder, although dithered, I believe should be fully shadowed by helmet etc The light coming in slightly is good though, builds the form although you should change it to a backlight, which is feasible. The little speculars on the body are good, just watch the consistency, the arm highlight is off compared to helmet where the the light is raised and moved towards rear slightly. The highlights on the rods from back are too similar, they need individual treatment due to the position and angle change for each. The building edges look a bit funny embossed with thin highlight like that. I would take the highlight off and leave as flat. The eyes look neglected compared to the rest of image. I would suggest no outlining. The stomach might need more detail, which will allow you to add some interesting shadows in there, as luciferian mentioned.
all just suggestions, i really admire your work.
