I didn't use any patterned paper at all! I did heat embossing. I've been experimenting with heat embossing for a few months and I like it! I was inspired by Kristina Werner and Jennifer McGuire. They do a lot of stamping and embossing and I've been obsessed with their YouTube videos lately.
I browsed Pinterest (of course!), watched videos, and experimented with several colors and designs till I came up with my prototype!
It was challenging to do such a large project with such new materials, but I had a lot of fun and I feel very comfortable with embossing powder now. Though I have yet to figure out a good way to get it off my craft room floor...
Any suggestions? :-)