There's something unnatural about her skin in the first picture, there's no texture in it. Even the most perfect complexion has texture. The mouth doesn't really bother me. I think it adds a little sex appeal to the image.
The second shot I don't care for. It just doesn't move me. Nice technicals and composition.
The third shot needs a slight Levels adjustment to take that milky haze off the capture. Go into Levels ad move the right slider to the left until it's under the data and see what you think. Add a little sharpening and the eyes pop and the images comes together.
I like her sultry look, some moody lighting and earthy wardrobe would go well with that look.
Good stuff... push yourself a little more. I'll be looking foreward to seeing your progress.
Excellent work. I do like the first the best; it brings out her eyes. Looks like the sunlight caught her squinting a bit. The second shot is a great capture of her pleasant smile, maybe a different crop?