Remember the GWC test? Don't do any of those things, especially with an experienced model. The modeling community in your area will be a small world and you'll get a bad rep very quickly. Behave, be professional, be considerate and polite, and deliver on what you promise. In fact, over-deliver, an extra $10 "for car fare" will go a long way in good will.
You may find models are willing to work for photos now. Be even more kind, especially if one asks to work with you. You never know when her best friend will need a wedding photographer!
Do something different:
Now that you have 23 great 3/4 profile torso shots, it's time to start pushing the genre. Glamour is entirely too serious, so try to find something new to do. Have some fun, let the models play. It may not be great art but it will get you out of a rut.