[Need some guidance: Making glowing tattoos for Aesthetic body]

Right, i did a bad job of explaining. I meant more so, to be able to make my own tattoos and have them worn so they show up over the skin im wearing

[Need some guidance: Making glowing tattoos for Aesthetic body]

I kinda have no starting point, but a friend of mine almost years ago now took an upper body from an older mesh body and he toyed with it. Basically i wear 2 bodies and 1 is made invisible say for the tattoos which glow and it looks amazing. Never really tried anything like this, have no start point just wanted to see if i could occupy my time on the weekends with this stuff