I can see so much pillow shading on this. When you shade you should think about where the light source(s) will be able to illuminate instead of simply shading in from the lines. Also I think you could up the contrast a bit.
you might not see it, but irfanview does... and with adobe photoshop you can also see what exact colours you have in them... I use it to see if i didnt miss any pixels when im changing colour (etc).. so, that might also be a nice idea for you next time tribecca
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