I know this excellent painter. A bit slow, but does the walls beautifully. You will not regret hiring his services.
I know that the Vatican didn’t.
And if you want a ceiling specialist, I have another contact.
Dude’s a bit moody, and works at his own pace, but genius.
PS: It’s not allowed to take pictures in the Sistine Chapel, so I have no clue where I got this picture from! O_o