But the most important advice we can give you is to communicate with your tattoo artist. He wants no less than you to keep his art in perfect condition because you are a walking advertisement for him. At least once, you have to visit the studio during the healing process to make sure the tattoo is correctly cared for.
If the tattoo artist doesn't want to do it, he doesn't care about you and your body, so don't repeat the mistake of going back there. Work with cool people!