Funny thing, Michelle, when I started out here in this forum I asked a very similar question. Many here are worried about looking female, I was concerned about behaving female. The responses I got were sort of abrasive. I couldn't understand.
Now, a few years later, I am on HRT and I am just enjoying the ride. I am not forcing anything. As the weeks and months go by, I find myself behaving differently without thinking about it. Breasts change your behavior. Soft skin changes your behavior. Clothing changes your behavior. It does not take much more than a tweak here or there to pass, if you own yourself.
Many of us try to make up for lost time and over do it. It makes us stick out.
Some of us like that sort of thing but most of us just want to finally be and feel like ourselves... without unwanted attention.
Look at my avatar. That is me, as I am. No makeup, no wig, no forced smile. I can easily blend in in either direction if I choose, at least for now... and frankly, either side of the binary takes effort for me but I keep moving towards the female side. Every girl wishes to be a supermodel. Well most do. I am content to be a normal female who just fits into society. Supermodel would be nice, but I will take what I get from HRT, and I will only consider facial surgery if I have lasting issues entering the proper restroom.
If you really want to "Pass", work on your voice.