Why are you confident about posting your official Instagram with your real face?
Aren't you afraid that if there's something heavy issue happened to you here, it can be used to attack you?

Also, where's the BTC transaction that you really buy the Instagram follower? This might be your alt account. This isn't a social media group where you can fool people by vouch on the thread, every transaction link should be posted for the legitimacy of your service.

Signed BTC address should be also shown, to prove you're the real owner of the address that has been used in the transaction