#4

Good focus, Good composition, Fills the frame, Colors work well, Touch of overexposure, Appealing.

#1 

Terrific focus, Depth of field, Good angle of head, Edge merger with the chin/lip and ear.

#3

Eyes underexposed, Fills the frame, Good focus, Centered, Background overexposed, Loss of detail on the body.

#2

Mergers, Nice color, Good focus, Centered, Doesn't fill the frame, Could have been a better vertical picture, Loose mount and pencil marks.