Test it on the wall where you intend to hang it. Clean your wall and let it dry, peel off the backing, and stick it up. I left mine in place for about three weeks, and it hung well without any issues.

These stick to multiple surfaces ... Follow the manufacturer's recommendation for letting the strips settle on the wall before hanging the picture. Once you've hung the picture, check the top ...

For small items you want at eye-level, use Command picture-hanging strips, £2.47 on Amazon, which stick to the back of the frame and attach to the wall. For your fave snaps, order lightweight ...