I can't pass as male, and I tried a couple halloweens ago. LMAO! I had to put make up on (fake stubble) to get close, as well as wearing male clothes and practice. I was still girly, however, 'cause I didn't pass well and I got a lot of weird looks -- passing is more than looks, btw. I found it hard to try and be male. o_0 I'm glad I don't have to go around trying to be male when I'm not. LOL
I don't wear make up often, and I haven't for a long time. During the first year of transition I did, but after that I stopped. If I wear make up I do it for myself, and most of the time it's eyeliner or I go do it up if I'm going out to something. I don't have many problems with people thinking I'm a dude, even when I shaved my head a couple years ago before having SRS. o_0 LOL I just look like a dyke.
Anyway, my point is that eventually you're gonna start having a hard time passing not only in looks, but psychology and over all (ie, body language).
I should point out that I've been on hrt for 4.5 years... the first year I had the majority of passing problems, but after that those problems slowly stopped until it became not much of an issue.
If you wanna go the slower route, just use a blocker until you're ready for full HRT. Talk to a therapist, see a doctor, and all that pajazz'n'stuff. But, know eventually you won't be able to hide who you are and the affects of HRT...