Trimming this stuff is pretty painless. I used a utility knife and changed blades often. I left about 1/16” and used my sander with 150 grit to sand it flush. I figured this would be safer than trying to trim flush. If it is not perfectly square to the edge, it will be visible and the joint will not look right. I found that if I score the paper side on the cross grain cuts first, it would cut much easier.





I did make a template out of parchment paper so that I could find all the holes later. Glad I did……. I used my utility knife to cut everything out, working to the edge by making the holes larger in steps till I could see exactly where the final cut needed to be. A little hand sanding with 150 grit finished the cuts off.