Well in fact, I did not really like the composition of the first one, so I did it again, with quick shadowing to test the new composition.
I like it better that way, so I think i'm gonna stick to this one, even if spike is less present on this one.
Edit : Finally finished (or at least almost, I will just have gnais look at it), it's been so long I started it. I think I must apologize to
for being so long ^^. I just blocked on spike. I don't know why. The pic was like this, with spike unfinshed for so many months ...
For this one, I tried not to use the eyedropper too much, as I usually do, to try to preserve a bit of color diversity. (Which I destroyed just after with global color effects by the way ...)
Edit 2 (2/5/12) : Gnais is back ! Followed his advice, plus some things.