I love the warm colors. The face is fascinating, it seems to just jump right out of the picture. (burn tools blah blah don't change the face it's perfect) It's true the light source is vague but that does not seem to be terribly important in this piece. What does bother me is that the visual path your eye follows goes down toward the pumpkin and cat and they both look unfinished. I'm not saying outline everything in the pumpkin and the cat just put some line work and more detail into it. As it stands it looks like it's in the same field of view but it's out of focus. When you draw water on the pumpkin dont actualy draw the whole outline of each drop. Just draw the highlights of the water.
Looks like you are getting better , it looks good in general, but yeah, I have a few critiques:
1-the colors you used for her face donīt convince me... try to avoid using the burn and dodge tools (Iīm not sure if you did use them but meh), since those work most likely with saturation, I would recomend you to create a color palette and use it to diference the cold shades from the warm shades, the cold highligts form the warm highlights etc.
2- I canīt tell where the light is coming from, what confuses me most are the highligts in the hair, since sheīs got those in every curve, itīs hard to tell...
donīt get me wrong, it does look good
keep it up, you are getting better pretty fast