I have used your method. I found it didn't give enough stability for me to satin stitch the applique down, but if you are going to use blanket stitch then I don't see why it wouldn't work fine. I got a very large box to lay the pieces in, then sprayed them. Sometimes I went outside, sometimes I didn't. The box is about a 2 ft cube - so no overspray. I use spray adhesive where ever I can. I like the uniformity of the coverage versa the spotty coverage of a liquid glue or a glue stick. Good luck.