I don't know. It's hard for me to say or come up with anything major. To be honest, it's really not too important to me. I'm just me and that's all I care to be. In the past, I used to feel so shy and awkward about expressing and being myself, but nowadays I'm much more free. The point of transitioning was to increase my comfort levels and be true to myself. So to everyone out there, don't feel pressured to change who you are in order to conform to gender stereotypes, be who you are.
I suppose two things that are masculine about me is my interest in hard rock music (metal, punk, etc) and video games. Still, those are interests and not character traits, so I really don't know.