I haven't started transition yet, but I remember having dreams where I was a girl even before the time I realized I'm not cis. In some I would be a female fictional character from a movie/animation, and once I dreamed I was looking in the mirror and seeing a female version of myself. I felt really happy seeing myself as a girl in that dream.
I still don't know if I would like to do a complete transition and be a woman, or if I just want to be less masculine. I'm probably NB. Not sure.
(^w^)ノ~~