I use steam to seam, or maybe the name is reversed, I always get it backwards. Any way, there is paper on both sides.
what I like is that it makes your applique pieces sort of like the old time colorforms we played with as children. It will adhere to the fabric but you can pick it up and move it around until your placement is where you want it. Then, when you are happy with placement you can iron it on. After that, I blanket stitch around all.