1.Just make sure you have a diamond helmet ON your head as a armour
2.Move your world from your hard-drive to a usb device or external hard-drive
3.Upload the map to media fire or any website where people can download it
4.Give me the link so I can download it
5.I will mod your characters head replacing the helmet with any block you want:Gold,jukebox, glow-stone etc.
6.I will re upload the modded version and give you the link
7.You can then download it back on your usb,put it back on your xbox hard-drive and play it as normal but with a modded character that will impress your friends.It's pretty awesome

Message me on xbox GT: STG Tango
and I will take you through the steps if need be but otherwise still add me

Thanks.