Not bad work--thanks for sharing and providing the details. I think for an initial set, this is quite good. Let me offer some overall thoughts:
1. Remember the purpose (promoting these escorts) and as tempting as it is to find a creative angle or unique pose, don't forget the purpose. They need to look sexy and attractive, not too explicit, no distortion.
2. Eliminate clutter. Especially for work that will go on the web (so lower quality photos and clutter and background detail can become distracting and just "noise")
Now, as to the photos:
#1: Very appropriate for the purpose. Eliminate that shower handle near her right breast.
#2: My favorite of the bunch...a nice boudoir shot, effective promo shot for an escort.
#3: Probably an effective escort promo shot and it hides her face (which for some women in this role is a positive). You've got glare off of the panel behind her, you've compressed her body so she looks shorter and squat (more than she probably is). And lighten the side of her hair facing the camera (you've got shine on the hair on top and on the side...a black void). A little bit of postwork and this would be a fine escort promo photo.
#4: Beautiful model, nice pose but you're so close below her that you get distortion (which is bad). The light hanging from the ceiling is distracting. The shadow on her face from her hair is distracting. You could shoot the same model in the same pose but get 10 feet further back and with a different backdrop (plain white wall, seamless backdrop paper) and a narrow aperture and you'd have an excellent shot (both of a glamour/lingerie pose and for an escort...sexy without violating any local media ordinances).
#5 and #6: some distortion (especially in #6) and lots of visual clutter. A better shooting location with less distraction and a narrower aperture (f2.0) will take the same poses and work wonders. Remember, part of my criticism for "clutter" is a recognition that on a website you don't want a lot of distracting clutter given the lower quality of the photos.
#7: I love playing with mirrors and reflections, this has potential for being a lovely art shot with some tinkering. But for the purposes of this shot, I think she's too close to the mirror.
#8: Good escort pose (sexy, not too revealing, hides her face for women who want to do that with publicity shots of this work). I would like to see this lit a little better...the falloff with the mirror means that she has some arms and torso and the rest of the mirror is black.
Overall, some nice stuff for your first try at this and some lovely ladies.