In general, quite well done.
In #2 I think the hand and fingers are too bright and pull the eye
In #4 I couldn't make out what the defect was, doesn't have the same certainty as the others.
Very good series; I agree with Lew's points, and FMtM about #4; I can see the injury when I look at it, but it's NOT obvious. I would suggest either binning this one or redoing it to make the injury more apparent.