Really excellent. I've hardly done any 3-D work, but judging by what I've seen, feet are tricky to make look quite right, and they look very pretty in your shots, especially in that first one.
I think you add enough "imperfection" to the tickle victims' expressions and features to get a little closer to a realistic feeling. I also think your bloom and glow effects work well to this end when they're used in moderation.
I'm looking forward to whatever you post next. Thank you for your work.