I did a full transition overnight, so to say, in that I came out to everyone within a few days of having ffs and changing my name and gender. The first months following transition were rough, mainly because it's virtually impossible in my mind to convince anybody (including myself at times) that a person can physically change gender overnight. During those first months I truly realized and mourned the loss of all those important, formative years I missed as I grew up the wrong gender. But - I never felt more at peace with who I was identifying as, and actually felt pure elation at having transitioned.
As time has passed, hormones have worked their magic and my facial features have "settled" into their post op plan. I have undergone breast enhancement surgery (which shockingly I find to be a huge aid in passing!) and also vocal surgery. Voice training, even with surgery, is one of the most difficult things I've ever undertaken... And it's also one of the most imperative changes I need to undergo, in my opinion. I have a huge issue with genital dysphoria, so that is another imperative, although an orchiectomy really helped with that.
After almost 18 months I believe most of the looks I get are from jealous women who can't believe my 6'2" height. Men look, some figure it out but aren't sure enough to really say anything. Older men stare at my boobs. Having longer hair is another real aid in passing, whether real or a high quality wig.
I think the takeaway from all this is that if you are mostly binary, once you go full time you are forced to start living life the way all women do. You want nice clothes, you have to learn about makeup, you start to suppress the fake macho crap you spouted all your male life. In essence, being a woman reinforces your transition and makes passing easier and easier as time goes on.
Finally, I still grieve over not being "complete" or even "real" sometimes. My wife suggested that I read about women who are infertile and feel that they are not fully women like their friends and counterparts. That was a great call - there is a strong parallel between women who feel different, cheated in life, and transgender women.