I used Steam a Seam for the first time to do snowman applique blocks. When I ironed the applique to the background fabric some of the snowmen adhered to it & some didn't stick at all. I followed the directions exactly. Cannot figure out why this happened. Can I now cut more Steam a Seam for the ones that didn't stick & iron it in place? Will this work? It all stuck to the applique pieces. Is there a better product to use?