Apply Masking Tape to Glass Edge

working on prepping some furniture to get ready to do this is a desk with a mirror on it um a little vanity desk and I'm masking the glass off the glass is nailed through the back I can't remove the glass I don't the old piece of glass I don't want to get any paint on it I'm using frog tape the Frog tape will keep paint from bleeding underneath the tape and the Frog tape won't damage the glass either so just getting it up as tight as I can to the wood and then I'm