The boba fett helmet is supposed to be super accurate so I can't imagine you would have to do anything at all.
Unless... a fresh coat of paint is your style
As for hasbro making more...
Are you familiar with hasbro? They almost enjoy watching their customers or rather "potential customers" writhe in frustration trying to get products before scalperbots wipe out entire online stock. They don't understand supply vs demand equals money. For ****** sake if they would just do pre-orders and if 2 million people order a 100 dollar helmet guess what hasbro? Mission accomplished everybody wins but nah.
They would rather go "oh 2 million fans might want these? Let's make 200 and put them out to target exclusively"
Yeah I'm a little bitter lol