How do you make usernames?

Description from original post (created 2016-04-26 05:44):

How do you make usernames that aren't words for example: Aphmau, ect. Can't think of any others  how do you do that? Please tell me in the comments if you want to be helpful! <333

also, I got banned from my favourite server for a inappropriate name..? Welp I guess queer doesn't just mean strange odd or weird.... I even spent money on that server...
any servers that have creative building places? I love building <33

I just want to go there and build until my ban is up and I can change my user... ;v;