I made this frame a few years ago, to hold a picture of my nephew (now 13) at the pumpkin patch.
Lightly sand a wooden frame (found at most large craft stores).
Measure your ribbons and cut them to fit the frame. (You'll need to trim later anyway, so make them a bit longer than you'll need.)
Paint the frame a color that matches well with your ribbons. Let dry.
Attach ribbons to the frames. I use Mod Podge, but you can also use regular glue slightly watered down. Apply the Mod Podge to the side of the ribbon that will adhere to the frame and stick the ribbons to the frame. Let dry. Apply another coat to the top and let dry. Apply a third coat and let dry. Trim the ribbon to even out the frame.
The project originally came from PlaidOnline, which you can find in my links.