Tattoos over scars?

Becky
Hi Ladies. So over the summer when I've graduated I would like to get my first tattoo on my leg to cover up my self-harm scars and I'm just wondering if anyone else has tattoos covering scars? Do they ruin the tattoo or does it cover them well? It's going to be a meaningful tattoo for me and I don't want it to look crap because of scars under it 😕