The only time I try to make another version of myself in a game is when I'm playing The Sims. Then I marry myself off to a hot dude, and have lots of cute alien babies. Actually... I do play as "myself" in Terraria? Would that count? Lol!
I've got OCs that I write about, draw, and have customized ball jointed dolls of. I use those OCs when I create characters here, or in games like this, and try to make them as similar as possible. So it's quite common that I play both male, and female characters (I'm a guy btw), none of which looks like me. I guess my summoner here looks a bit like me though? But the only similarity between me and Krys, my dragoon, is that we're both really pale.
The most important thing is that you're having fun. :3