I was taping the fabric to ordinary paper - here in UK freezer paper is not widely available and I haven't got around to buying any at the shows yet. When I was working on Too Loud Man I was making 6" Square in a square blocks and was originally drawing them onto the lightest weight sew-in vilene for leave in 'paper' piecing, which got real boring real quick! so I drew the block onto the middle a sheet of A4, copied it with my printer (to see where it would end up on the next sheet) then put double sidded sticky tape along the lead & side edges of the seam allowance, positioned the pre-cut 6.5" square of vilene carefully on top and ran it through the printer. I left the trailing edge open so that I had somewhere to grab for removing the fabric. I also had two of these sheets on the go so that I could be arranging the fabric off/on for one sheet, whilst the second one was printing. The tape was good for loads of copies (30+)
I was put onto the tip of using large A4 labels by my friend, who teaches printing on fabric, as she found that she got better and more consistant results with them, instead of freezer paper and they are good for 6-10 copies. Just don't leave the fabric on for hours, and take care to peel the fabric off evenly, preferably straight of grain if poss. The labels should be available through your stationary stores ie Staples(?)etc but what sizes you can get in USA I don't know, look for the largest possible (A4 is 210 mm x 297mm which = approx 8.27" x 11.69")
Whichever method you use, just make sure that there are not any trailing threads sticking out around the edges