Yes, it is kind of tricky to get a nice, uneven edge! I'm thinking it would actually be easier to tear a strip of paper and either lay the mask on the stamp and ink over it, then remove before stamping ... or use a traditional mask where you lay the mask on the card front.
Connie, as soon as I saw this technique I thought this would make a good technique/layout to use for encouragement cards for
Heidi's request for card donations for a women's shelter.
Here is the card I will donate.
Thanks again for this challenge! This background was a little easier because it doesn't really have a "right side up" like the music did.