So I put on another layer of Disco ball sparkle and pressed down star stars all over the nails. Then I covered it with one layer of Top coat from OPI and two layers of Seche vite to make sure that the stars stay in place.
I am really satisfied with the result. With all that clear polish it almost looks like the stars are floating around.
So, with base coat I now have about 13 layers of polish on my nails. And lots of stars and glitter. I am never gonna get it off, but hey, my nails do sparkle now!