Massaging, and more massaging

Tomorrow I've got my first in-home massage of someone who is not in my immediate family. Its gotten me a little nervous. I think I'm going to mess something up, expose something I'm not supposed too. Things will look to dirty, I won't look professional enough, I won't be adequately prepared. Somehow the "take a deep breath and recognize you can do this" approach seems inadequate. What will that be worth if my sheets are dirty. What will that be worth if I flub up something? I want to be as professional as I can be, but still the nagging question in my brain... "but who am I, and do I belong here." Its a weird thought that pops in and out. I don't doubt my capacity to massage. I doubt my capacity to look, act, feel, and be perceived as professional by someone who knows very well how to be professional. Its messing with my brain, it really is. Some part of me thinks my teeth are too crooked to be seen as professional. My body is shaped wrong, my manner of speech perhaps too informal. It seems that their are things about me I cannot change or do not know how to that must be changed to be truly "professional." Or maybe I've created a mountain out of a mole hill. Maybe being confident that I can give a good massage is all I really need. I guess I'll find out soon enough.