Hiya Sammy,
Wow that is a fantastic set of photos you have taken.
I think #1 has to be my favourite out of the set mainly because of the pose and the sultry look the model has. My only tiny nitpick would be the bit of hair just above her bra on the left.
On #2 I like the pose, but feel there is a bit too much shadow on the right of the face.
With #4 I think the neutral stockings let the image down (especially the roll at the top of them), but that is probably just my personal opinion.
With #5 I think it would have been better if both the models face and snake's head were in focus.
Otherwise I think you have done well here, and I am sure you had a great time taking these pics.
Keep up the good work
Cheers
Dawn