Hello! I am a FtM and I'm going to get my hair cut soon. I am also pre T and I have blue hair and a round-shaped face. I really need help to find a haircut that would help me pass..
round face = anything with height. it will balance out the roundness and make it not so noticeable. shaved on the sides but longer on top, faux hawk, pompadour, etc. all work. google "21 grooming charts every guy needs to see." it's on buzzfeed.
I second invisible's thoughts. I have been on T 22 months but I do have a rounder face. I went to an undercut and would never go back. Very short on the sides and about 2 inches on top. It's super easy to take care of and helps my face not seem so round.
I would also recommend if you are going to see someone at a salon/barber shop, ask for someone who is good at guy/masculinizing styles! :)