Doesn't that top layer look like it was punched with a border punch? I think so. The shape that makes up this mask is actually a full square with the lacy loops on all 4 sides. I just pulled the mask so that one looped side was outside of the defined page. Because it is a full square, don't hesitiate to copy it from this template and use it in other layouts.
For our paper scrappers who have those gorgeous border punches to work with, here is the sketch.
The digital template I created in Photoshop Elements can be downloaded by clicking on the link below.
Hope you have fun with this one! Thanks for stopping by!