hehe not really nude.. but taking your shirt off and making a pose and seeing what happens, or pulling up your sleeve and observing your arm.. etc etc
1st one good colors
last one too stiff
The very last character is have great
values. Would be nice to see more in
the same sort of style.
Might be worth taking your time to make some smoother transitions between colours in your digi work, otherwise things seem to be looking OK. Bit of practice, and she'll be right as rain.
With some of those quicker stuff, try to define the structure of the character more and how they are placed in their environment. The last one is nice. I'd have to agree with everone else and say it would be good to see some more of those!
Unreffed stuff is getting seriously good man. No crits here, just dropping some encouragement.
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