How can i paint the constellations in my room?

I want it so that when the light is on, you cannot see them. When the light goes off, you can see all the constellations and random stars. I want to have some of them astronomically correct, but not necessarily all of them. where can i get a star map and how can i do this?How can i paint the constellations in my room?You can get a star map online and use glow-in-the-dark paint.