Love the first headshot but it seems a little burnt out on her nose. The full body shot looks posed instead of naturally moving.
I think the best of all four is the second one of Chris in a suit and tie - that is a killer image and would do your portfolio a great service. Plus its good to see photographers who can shoot male models - It lets the rest of us know for sure who is a GWC versus a pro photographer.
I love the milkiness of the second picture in the third set but something is lacking here. I prefer the one that looks as though you caught her mid pose.
Here is my "milky" shot... I do it alot as a photographer as well.