I see symmetry, rule of thirds, unusual perspective, nice use of ambient lighting and nice use of a reflector. Basically, it's the skillful execution with all the hallmarks of a pretty girl shoot by Virgo. (You caught my attention with Chew Ling.)
In the last image, the model had locked one elbow straight, and it doesn't look nice. Otherwise, all the images are generally pretty.
Just to side track a little, what's the shutter count of your 10D now?