I just inherited a framed picture with a terribly fancy mat: inside the regular cutout is a 'ring' of mat, and that ring has come loose. Here's what it looks like:
You can see how it is no longer suspended in mid air and fell down to rest on the mat below. I want to fix it, but I want it to be done The Right Way®.
I googled a bit but couldn't find any how-tos on fancy mat techniques like this. I'm hoping someone here has some person experience with this and can provide some advice. Any help is greatly appreciated!