I need to change my email iCloud

Note the restrictions in the article.

Apple ID Name Change.        

 What to do after you change your Apple ID or password - Apple Support    I suggest doing this before you change your Apple ID or password.

fausto210 Said:

"i need to change my iCloud email."

-------

Do so here: appleid.apple.com

1. Scroll to: Security pane
2. Click: Change Password...
3. Proceed from there as necessary

Screenshot: