08:46, 6th Sep 2013
enjoy: The green shades should be blended better. The hand looks very cartoonish and flat, and it doesn't really look like bone. Also, you should add more midtone colors, instead of having just a really dark shadow that has a really hard edge. I suggest starting with a basecolor (in this case, a medium-light grey), and then work with highlights and shading on that.
Awaiting update.

Not sure why it cut off part of the picture when I uploaded it. If i need to change the larger image let me know.

I like the green . But the skeleton hands looks a bit fake

Show the whole hand and spread the fingers a bit. It would look way better. =)

Does the hand look more defined in this picture?

I added more black and an off white to give it a more natural look (hopefully)
I actually may need to add more of the off-white.

Oh. It is a hand! I thought it was grass and rocks x) Sorry.

I do not really think it is enough clear to show what it is meant to be...