Passing is determined by you not by others. I used to think if strangers look at me funny then I do not pass. If family, friends, and co workers think I dont pass its because they know who you are.
Looks is only one aspect as others have pointed out. Most tg THINK they have some non passing looks that cannot be physically changed. Height, feet, hands, shoulders, face, chest etc. Some features can be changed. Remember there are so many cis females with what you call male features, they dont get upset. Remember over time on hrt you will change shape and your skin texture will soften your look, loss of muscle bulk will make your shoulders feminine. Your face shape looks passable already.
How do you walk, how you act, how you speak, cough, laugh. How you engage a conversation with a male, female, gay etc.These are the non passing aspects that most strangers pick up on, these aspects can be changed by hard work.
Passing is NOT being pretty, its to look female and act female. Are you talking about looking like a hot female? Thats not passing.