I am a big fan of Overweight-Cat and any criticism should be taken as wanting to see more awesome work from this artist.
1) smooth out the curves and details like the oversized, bumpy palm.
2) The large heart doesn't look too good. lThe tassel contrast and detail is a little basic/cartoony.
3) I personally dislike the eye and nose. facial frame is fine, hair is fine, jawline is fine, mouth is fine. Eyes ought to be sharp and seductive. The current look with the eyelid shape and pupil location makes it look a bit droopy and plain. Nose is slightly too visible on the nostril area, making me think "porcine", which is not good for a sexy char.
4) If the right thigh is over there, where is her left? It's not clear.
5)The right hand is much smaller than the left, but the tails do not reflect the depth. This causes perspective and proportion to be off.