These are nice photographs, looks like you are enjoying your new toy!
1 I think you have been trying to sharpen the eyes and blur the rest of the image? I think the effect is to pronunced, Focal length could be a smidgen longer as well
2 Very cool. Its apity and about the hair covering her eye. I think it loose a little of its impact becuase of this.
3 THe lighting is a to harsh with the shodows under her nose and eye, the colours are quite destaurated.
Hope that helps
Stuart