What is the best way to install the bull nose arch?

Question

I need to know what the best way to install the bull nose over an arch, when I s***w it up, the lip on the other side is about an inch from the wall

Answer 1

cut a lot of slots on the wings with a pair of snips.

You can get bull nose (corner bead for plaster) that is designed to be bent like that, it has flanges made of expanded metal mesh.

Answer 2

Bull nose now come in vinyl that is specially made for it.  It works great.