What I find weird about many of my teachers is that when they write 2's, they put a "loop" on the bottom of the number (if you know what I mean, it's hard to explain). I have no idea why they do that. I notice many classmates doing that too. It just looks weird.
What I also noticed is for some reason my handwriting looks more neat and clear when I write in pen rather than in pencil. I don't know why.