Stop in for a cup of coffee

Iā€™m not a body guy. I have a pair of rear dual antenna for my 59 Fury. Have to cut a 2ā€ x 1ā€ hole in area near window. What is best way to do this without screwing up paint?
I just use a hole saw and drill slow then touch up the bare metal with a paint brush and Epoxy primer.
Might not be the best way but it works for me. :thumbsup: