Only the first one looks decent. I have no idea what's going on with the second one, it's too pixely and...I can't even tell what that is o_o The next is too dull, I can't even tell if it's like she's wearing glasses or she's holding something glowing? The last is too blueish and the blue doesn't work. Too dull. Her hair looks like part of the background, not actually her hair because the colors don't mix well. Practice makes somewhat perfect. Try tutorials?
I see, well I geuss I will try some tuts then ^^; the second one shes wearing a headband that has like two shades covering her eyes.. Third, yes shes wearing glasses.