Make you wear only men's clothing for a week, curse, eat only meet and drink a lot of beer. That should be punishment enough. Sounds funny but the only real punishment is to remove all the elements of the fetish. Anything else is just giving you want you want, punishment in the context of your fetish. This is how I was punished in the past for another type of fetish.
Gotta go with Rocky B on this. Punishment for you would undoubtedly live and dress like a man for a week.
See you got some sensible suggestions here! It does depend what you are into, but for starters you need to tell us your most end depraved fantasy, and do it now!