Is there anyway to fix an existing tattoo? Can it be gone over and changed or will it just look worse?
In general, some tattoos can be reworked or covered up. I myself have a coverup on my left shoulder. What can be done is a ratio of what the original work is, what “needs to be done to it”, and how skilled your tattooist is with coverups. There is no way of erasing existing ink and much depends on the size and available negative space around the present tattoo.
