When your done screwing the tack strip around the perimeter. Your left with extra canvas to trim. Take a razor blade (with some new back-up blades, you will need a few throught the process) and proceed to trim along the bottom and top along the inside of the tack strip..make sure not to slice your new canvas!
I was praying to the gods hoping this wouldn't happen
and I'm lucky to say I pulled it off with no damage!
just be careful.
Now it's there
Now it's not
Interior