Nice work, the males poses seem wrong/off to me though which sends mixed messages. 3rd render I would put the hand at the side of her neck pulling her closer, the story doesn't seem to translate well from 2 to 3 that may fix it (maybe not).
In the 4th I would have used his left hand on her back bending her over and the right hand to be spanking her. In the 5th I would place his hands underneath her legs to hold her up, due to their height difference he would not be able to get her that high without her helping him.
If it was used to transition into the 6th, it probably would have been better to have him push her onto it. Those are just my thoughts, I don't mean to offend, at the end of the day it is your work and you can do what you want with it.