Just be yourself and the photographer will to the rest. I did a session with Glamour Shots years ago and that was fun. They did a bit of a more dramatic makeup that went very well with the hats and props that they used. Another time. I used a regular photographer. I told her I needed a portfolio to interview for a drag show and she did the rest. It was fun also and the woman who was in her late sixties at the time (I was in my late 30's) was so sweet and caring during the whole shoot and explained her choice of poses and why one was more feminine than another while she was getting me into different positions. It's a great experience and usually the pictures are better than anything you could do on your own.