Bandanna Picture or Mirror Frame
This is essentially a decoupage project, only you're gluing down fabric instead of paper.
Measure the depth and width of each side of frame. If working with a picture frame, remove glass from frame.
Cut bandanna borders to fit frame sides. For flat frames: Cut fabric into a 6-sided shape for each side, leaving enough fabric to wrap around the inside of the frame; make 2 snips in the top edge, as shown, so you can fold that edge into the frame's opening. For recessed frames: Cut a piece to fit each side (fraying won't be a problem).