Hello  could someone tell me how to change my member name please? Thank you! 

Your membername Blaketelford will always show and can't be changed. If you want a different name you need to open a new account. 

Each account must have a different email address. But if you use Gmail adding a dot in the email name makes a new address here. It still goes to the same box at gmail.

For example myname@gmail.com and my.name@gmail.com

let us know how it goes  ...