Whenever I approach a shoot like this I tend to do a little bit of research and collect the kind of images I would like to capture (Deviant Art is good place for inspiration)
Once I have a selection, I then start looking at aspects such as lighting, poses, framing.
Other aspects to consider are how experienced is your model? (how much direction will you need to provide) and what will she be wearing? (If she is wearing latex then her movement / ability to pose may be hampered.)
Approach the shoot with a few ideas in your head and then adapt. I would also start simple - possibly with a range of headshots - simply to warm up and for you to get used to working with each other.
Hope it all goes well and please come back and post the results.
Cheers
Spooks
You know your location and your model