I continued to build my stencil by creating multiple clouds in the sky. I put the small puffy cloud overlapping the large one because I wanted to build a bigger cloud.
As I mentioned above, I wasn't sure about the stenciling hype and the embossing paste medium so I have not purchased embossing paste yet! What I use is called spackle and it's what you'd use to fill holes in your wall! This particular brand is called "Fast 'N Final - Lightweight filler." I saw the original tutorial by Maggie here.