Well, since you have already acknowledged that the market is over loaded with young nymphs that need a good spanking (in a good way), I'll leave that alone a move forward with my comments.

-I like the eyes, something different...different is good.
-The lip shape seems to have changed from the first pic to the second, maybe it's just the color. The 1st lips look more pouty than the 2nd.
-Her tits seem funny. The size is nice but the areola looks flat, I would protude it a bit with just a dash of nipple.

I would like to see her hips and ass and what shape those are.

If you are just starting out then I understand you having to learn your programs to get a handle on what they can do for you, so this figure possibly looking like a 1000 others isn't a problem. Learn your stuff, get good at it...then make a unique figure that can stand on her own.

Keep up the good work and progress.
Regards

Comitted to excellence through art.