It's not hard.
If you meet a trans woman, treat her as you would any other woman and don't ask invasive personal questions.
If you don't know someone's pronouns, then don't assume you do, and use gender neutral terms until either they or one of their friends/colleagues communicates their pronouns.
The whole "walking on eggshells" thing is because there are transphobes out there who deliberately paint us that way. They push and push until they get a reaction, and then use that reaction to push some more. If you're not doing that, it'll be ok, even if you fuck up