I am obsessed with lite Heat'N'Bond iron-adhesive. It's my favorite way to create clean, crisp shapes for quilts, stitcheries, pillows, etc. You just need three items for this tutorial: a template/pattern to trace, fabric scraps, and some Lite HeatnBond! In this example, I'm using my baby boy shape template to create a small snail body.
If you're using HeatnBond for the first time, you will notice that there is a gritty-side and a paper-side. Using a lightbox or sunlit window, trace the [reverse image] of your shape onto the paper-side of the iron adhesive. (For a snail body that faces left, I will trace one that faces right.)
Loosely cut around the image. Lay the image onto the fabric so that the gritty-side of the HeatnBond touches the "wrong" side of the scrap of fabric.
Iron over the layers. (See package instructions for recommended heat setting.) The heat from the iron will fuse the two layers together.
Carefully cut out the image.
Remove the paper to reveal a tacky underside.