Secure Bottom Edge of Masking Film

What happens here

Once the top and side edges are secured, roll the excess masking film at the bottom of the window upwards and underneath itself, creating a neat fold. Then, apply a continuous strip of 1-inch (2.5 cm) 3M 2020 masking tape along the bottom edge, sealing the rolled-up film to the window frame. Ensure there is no exposed window vinyl (frame material) at the bottom.

Goal: Completely seal the bottom edge of the window.