Your flaming skull will look like a dying butterfly. It ruins your skin since you're basically editing your skin and putting ink in it.
Lol?
How does it ruin your skin?
W/e, IMO, a small tattoo on your back or chest or something subtle, isn't anything bad. Besides, who fucking cares what saggy nipples you have and where when you're 80? It's not like you're any attractive without it anyways, and I don't think you'll be getting any action.