How to change my username

Hey!

Recently I've decided to be more active in Apple Communities to use my knowledge and help others out. This being said, I would like to change my username, which is lengthy and not personal, that I set a couple of years ago. Upon earlier research, it seems that this is possible, but someone that is a higher level must request it. I am not sure, and I am new to actually using Apple Communities, but if someone could help me out, that would be nice!

Thanks!!