That word-patterned paper is so lovely as a background! It works really well with mists and ink, so go ahead and stamp right on top of it.
With the pink chevron paper, I was trying to do something clever and turn it so it was made of 'greater than' symbols, but then I layered enough on top of it that you can barely see it. I have to admit that happens a lot on my scrap table!
(PS: One person in that photo is a Studio Calico member! Another person in that photo will happily eat Studio Calico papers. I'll leave it to you to guess who is whom.)