Well, some things about namechanges are that:
1. it can't be less than 4 letters or more than 15 letters
2. if the name has been taken, that person must have been last active 2 years or more
3. the name has to be something that you can normally make, nothing inappropriate (ex. cunt, fuck, etc...)
4. if the name has already been taken, that person can't have been a staff member
I myself think you should change your name to milk