The best thing to do with a loose print is to mat it so that it can be framed. But where to begin? This video shows step by step how to mat a print using the hinge method, which is one of the best possible ways to ensure conservator-friendly archivability.
This method is great for flat prints. If your print is curled or wrinkled you will need to mount it to a backing board. Check out my other video to see how that is done.