To answer the original question, the two physical issues that I have with "passing" are my height (5'11") and my voice (described in an earlier post as Barry White meets Fran Dresher).
Now for a paid political announcement by the activist in me. Passing has the connotation of passing yourself off as someone you are not. I used to think that if I walked out the door and someone recognized me as not being a woman I failed. Then I realized that "passing" and acceptance are not synonymous. I was failing because I was not embracing who I really am. We will never gain acceptance and rights as a group in this society if our personal goals are to silently and completely blend in.
I am not advocating wearing a giant neon sign that says crossdresser, transgendered, transexual or whatever label you desire to wear. I am simply saying that this whole discussion goes beyond looking the part. It is about having the confidence to go out and be you and accept who you are.
If you can pass, the politicos want you to wear that sign around your neck, how else will you be recognized as being in the fight?
"one day I'll fly away..... leave all this to yesterday"
The crossdressing community is one that needs to stick together and continue to be there for each other for whatever one needs. We are always trying to improve the forum to better serve the crossdresser in all of us.