that's an easy cover up by the right tattooer , do some research for artists in your area that like doing coverups and do whatever style new tattoo that you want to get.
He says it is his first tattoo, so probably not a cover.
The application looks a little dodgy to me, too. Just let it heal and get on with your life.
Also, maybe don't get your own drawings tattooed on you. They don't really work, which is why you should always find a competent artist who can redraw your idea.