Apply Masking Under Baseboards

I'm using frog tape, one inch, green frog tape, using about 18 to 20 inches of tape here. I'm pulling out, using my masker, and then I'm just taking and sliding underneath the baseboards. I'm going to thin it on the gap, like it's sliding underneath there, and I'm not pressing it down. I'm sliding underneath, being very careful, running a piece of tape on the same touching it right here. That way it will come out really easy. The frog tape keeps the paper, you know, keeps it stiff enough,