Tattoo advice!!

Hey ladies, so I have self harm scars on my thighs (don't leave hate comments or anything, we all have done stuff we regret, and this is one of them for me), and I was thinking about getting a tattoo on one of my legs to cover the scars on that leg because I'm tired of people staring at the scars when I walk by and then them giving me a dirty look, but I'm not sure how thigh tattoos age? Any help or advice would be greatly appreciated!! The pictures are some of the ideas I have in mind.