Secure Plastic Sheeting to Bottom Tape

this is how I go about masking a door jamb before spraying I use inch and a half frog tape and I put it around the edges of the door jamb that way I don't get any paint bleed underneath my tape when spraying then I take nine by 400 plastic I cut enough to span across the door jamb and I tack it to the tape that's sticking up that I put around the door jamb I use nine by 400 plastic because it's a lot cheaper than using 3M rolls of film that way I save lots of money when masking