Easy Window Box Covering / Pelmet Box

I love online tutorials because they allow me to do a project in a way that I like, while still having some guidance. Here’s my latest project for our downstairs bathroom.
This is the perfect way to dress up a window without any drapes. I also like that it looks a lot more clean and simple than drapes. (And who wants drapes in their bathroom??)
None of the online tutorials provided a great way to mount it, so my handy-man husband attached it to the valence cap of our white blinds——now there are no holes in the walls. We really like it, and for a 20 minute project with foam core you can’t go wrong.