Reference: http://sta.sh/010yp89gzcye
Practicing volume. Could use some feedback.
Didn't make the sketch only practicing on it. Yeah, It's Jessica Rabbit, no particular reason to change her skin color.

I think I should leave this one as it is and maybe start over or make something different.
Thanks for the comments :]

Black Jessica Rabbit is looking pretty smexy dude! Something is off with her left boob though.

Why is you name that color
I want that fucking color.

I like it the actual lineart/drawing is great, but the coloring is horrible. Really smudgy looking and clay like.

Fixed her boobs. Or at least I hope I did.
@Mizu you have to be a mod and then quit. Also, what do you mean with "clay" and "smudgy"? brown? Maybe it's the tools I'm using: Dodge and Burn. Since my aim is to practice volume, aka lighting and shadows, I think a "clayish" look is not a problem.
Again, didn't make the drawing, only using it to practice.
Any comments on the lighting?

Quote from Hidro

Fixed her boobs. Or at least I hope I did.
@Mizu you have to be a mod and then quit. Also, what do you mean with "clay" and "smudgy"? brown? Maybe it's the tools I'm using: Dodge and Burn. Since my aim is to practice volume, aka lighting and shadows, I think a "clayish" look is not a problem.
Again, didn't make the drawing, only using it to practice.
Any comments on the lighting?

I don't think you fixed it. It looks like her boobs are tunneling into the bra. More cylindrical than booby shaped. I'm not too good with lighting, so I can't really comment there. Although, if you're gonna use a really strong white highlight on the skin, I think it would occur on more areas than just the chest. Although harshly said, when Mizu says it looks smudgy and clay like, he/she's just saying it doesn't look like skin.(or cloth)

Not bad, but there are a few issues with the shading/highlights that makes her skin look lumpy in some parts.

Quote from Hidro

Fixed her boobs. Or at least I hope I did.
@Mizu you have to be a mod and then quit. Also, what do you mean with "clay" and "smudgy"? brown? Maybe it's the tools I'm using: Dodge and Burn. Since my aim is to practice volume, aka lighting and shadows, I think a "clayish" look is not a problem.
Again, didn't make the drawing, only using it to practice.
Any comments on the lighting?

It looks really weird and awkward. Iunno but I don't think Dodge and Burn should be used for something like this, they are more "Image manipulation" tools rather then painting tools. Crtlpaint.com might have some more info on this.

Didn't really fix the boob
I agree with the others in that your coloring is really smudgy and weird and I don't particularly like it, but the lineart and general character is spot on and it looks really nice

Cleavage is badly done. Your right boob is now a cylinder.

Burn and dodge is bad. Don't do it. Your highlights and shades become horrible, not looking like what they should be, leading to the clay-like look you have now. Don't be lazy and choose your own colours.

Switch to monochrome and reexamine the shading.

There is a term for shade distinction, how blurry the border is between two shades of colour. You are messing that up. You can look at the reference. Very sharp distinction between light and dark. Yours, however, is all over the place. Hard to explain, but switch to monochrome and maybe you'll get what I mean.

Updated front page.
Tried to apply the advices given. Never fixed the boob lol.
Anyways thank you guys for the advices, I won't be working on this one any further, but if you comment I'll take that into account and try to apply it in my next project.

I think the glitter is much to distracting and the thumb of the person is a bit funny and camouflaged.

The skin looks bad.You used only few different colors and then blurred or used a smooth brush to blend them together. Makes it look really amateur. Use only little smoothness on a brush and blend the colors gradually together using the color picker. It makes it look more natural.