My only complaints are the hands (her left seems a little smaller) and the colors. :/

@Manupix: Ah, I didn't mean anything by it. Just stating my preference, but rest assured your explanation is understood and well backed up; I hadn't that knowledge before and liked how the black looked, but I can see how the black would make the piece less pleasing. Superb edit, however I'm not quite at that level yet. :P I definitely got some ideas from it though, so thank you. :)

@TheRobinHood: Yes, it is quite messy, and I'm glad the concept is "likeable" as it were. I have noticed that the heart may be hard to see, and will fix it.

Edit here.

Better lines, changed colors a bit (shifted hues: all your greens, then all your reds, have the same hue), added one dark green for outlines.

Not that I have anything against black outlines, but they didn't work with those other light colors, or they were too messy, or both. Considering the contrast they bring, the lines would have to be more than perfect! Could be worth another try though, making them an actual part of the composition.

Yeah, still a bit messy, but I like the concept :)

I think the heart could be a little more defined, its a bit hard to read.

Cleaned it up a bit more, it's still messy in some areas, worked on the anatomy a bit more.

@Manupix: B-b-but... black outlines... Eh, I just like black outlines and thought it looked better with them. Personal preference.

Please please please, clean those lines, this piece could be so good.

Does it really need black outlines?

And check a little bit anatomy: arms and hands.