You are encouraged to choose a new account name that meets our policy guidelines and create the account yourself. Alternatively, if you have already made edits and you wish to keep your existing contributions under a new name, then you may request a change in username by:
((unblock-un|your new username here))
on your user talk page. You should be able to do this even though you are blocked, as you can usually still edit your own talk page. If not, you may wish to contact the blocking administrator by clicking on "Email this user" on their talk page.((unblock|Your reason here))
on your user talk page, but you should read our guide to appealing blocks first. —k6ka 🍁 (Talk · Contributions) 13:32, 2 October 2017 (UTC)