Convincing mom!!!

Helloo guys! anyways I would love love love a foot tattoo but my mother is against me getting them. She has some but she always says "no they are permanent" and things like what if I don't like it. How could I convince her or how did you convince your parents? Also how old were you when you got your first tattoo and what was it? (I'd also love to see pictures😌☺) Thank you!.