Puffy Foam works best on designs that feature either a satin-stitch edge or underlay techniques that will perforate the foam prior to stitching the top layer. Not all machine and/or design cards are appropriate for Puffy Foam. Do a test sample before applying to finished projects.

If you are digitizing yourself, use underlay techniques that will perforate the foam prior to the top layer of stitching: a double "edge walk" of running stitches combined with a light zig-zag wil accomplish this, and tack the foam in place. This technique can be used in combination with planking and capping.