12-03-2012, 03:13 PM
A few hints towards shape and shading as well as jags resulting from circle tools.
Checking 02-images on the net, he's more round than stretched sideways. The shading shouldn't be so thick on the sides for a top light source.
Generally, I'd advice you to work waaaaaay smaller. THis thing is really huge and for graphics of that size, I figure vector graphics or 3D renders would be preferrable. Pixel art works better with smaller graphics where pixels actually matter. For large images, it's much harder to get good linework done on a pixel base. Otherwise, I'd at least drop the number of shades a lot and give it a more cel-shaded look, as at this size, the different shading lines just look weird to me. You can use in-between colours to anti-alias the two main shades, then.
PS: Oh yea right, the second one is a palette variation. Instead of pure grey, you can use tints of blue, green, yellow, whatever fits.