I am well into a Grandmother's Flower Garden Quilt and I used freezer paper for all of it. I have a metal hexagon template, trace the center part onto the freezer paper and then cut out. I use the miniature iron to iron the fabric edges over the freezer paper. (Fabric has been cut using the outside edges of the template which makes it 1/4-in larger.) This eliminates any basting. After joining the hexagons, the freezer paper pulls out very easily after you have joined your pieces.
I am doing some rosettes for the Aussy GFG quilt and did order the paper pieces from a store in Illinois. This is my first for using those types of paper pieces. They work well, especially since the flowers are getting mailed to Australia.
Be sure to leave the paper piecing in the fabric until you have joined the various rows. You sure have received a lot of good ideas. This Board is a blessing.