OMG!!!! this is AMAZING .... PURE GENIUS!!!!! A trick for hanging photo collections: Lay out your arrangement. Flip frames over. Lay waxed paper on top of frames. Mark hanger/nail spot on waxed paper. Flip waxed paper over and tape to wall, nail into wall where indicated. Tear down waxed paper. Hang photos.
Hanging a gallery wall can be a challenge. A great tip to avoid putting so many unnecessary holes in your wall is to cut out the frame sizes using butcher paper. Attach with painters tape and move them around
Use Toothpaste to Hang Picture Frames- Hold your picture where you'd like it go without touching the wall until you find the perfect spot then gently tap the frame against the wall. This should leave a small toothpaste mark to indicate where you should insert a nail. Wipe away any leftover toothpaste once the nail is in.