The reason why you are anxious before dating a transgender person is that you don't know what will happen, and you don't know how to deal with everything in your dating. New comer of trans dating, if you are anxious before dating, the best way to over come dating anxiety is practice. You can practice your posture and manner in front of the mirror. Anyway, you can also ask other experienced people for help. Internet makes is easy to solve all problems, if there are anything you don't know, just search online, you can get many great answers bu this way.