I think of hormonal-induced changes as generally quite subtle. Do not depend on them alone to make you passable, because they will not. They will not reduce facial hair much, if at all. They will not change your voice. Androgen blockers can help reduce doses of hormones needed.
Androgen blockers are useful for halting scalp hair loss.
You will see changes in your complexion and fat redistribution. Injectable hormones seemed to be more effective in my case, compared to oral estrogens. They had a wonderful calming effect for me and took the edge off my sex drive. You can hide the effects of hormones at work for as long as you want in virtually every case. Those who say they can't seem to want people to notice.