Truthfully, even the BEST at this are not "passable" unless you are very ...... or stupid......that's going to be unpopular, but if you know anything about anthropometric measurements you can spot dressers a mile away. Just look at the hands of nothing else is a giveaay. Facial features, muscular development.
If you want to give it a shot, go for it and enjoy the titillations!! I assure its exciting. But if you expect to LOOK like a woman, versus an guy dressed in women's clothing, you'll be deeply disappointed. Even hormones won't change that...….cosmetic surgery can help, but its not going to eliminate everything.
CW