There's definately improvement from last time! The breast bouncing is noticeably smoother than before so good work there! I like the little touch of having her tongue flick out, that's really cute!

However the overall motion in both scenes does still feel quite mechanical and floaty to me because of a lack of easing and anticipation.
For example the breast bounce has a triangle wave feel to it where they're going up and down linearly; whereas to me it feels like gravity or some other force should be slowing them down and then speeding them up during the descent. Consider a bouncing ball where as it reaches the top of it's arc it slows down; hovers for a bit, and then comes down again hitting the ground at a high speed. A similar principle applies here.
https://www.youtube.com/watch?v=Dup15rVd2eU&list=PL2182063FEDC31F7E&index=2

With the breast motion as well it might be an idea to have them lag a frame behind the motion of the chest considering the size of them, it'll take a while for the force to properly travel through them and I think it might add a bit extra visual interest.

You've got the right idea with Xpray being slower to pull out, that gives the penetration more force. Again the bouncing ball idea applies here. It's a cool angle as well, I like how you can still see her face :)

Another thing to consider would be timing; I would consider an extra frame before the penetration starts to build anticipation; pulling back a bit more and then going in. Once he starts after a few frames then have the queen do her reaction (ideally she should wait until he's fully in but you would't be able to see it in that case). Then again wait a bit before pulling out.

That way you can get a punchy rhythmic pace going on; it gives a consequence to Xpray's action which feels more realistic, and having the queen react afterwards draws the eye to her (at least mine would be)