More ideas from Zinver
Do this before making a gallery wall. Hold piece of paper on back of frame and mark with Sharpie where to put the nail-then tape back on wall and nail right through the paper! Voila!

How to design your wall gallery display.do this first! Trace shape of frame onto paper. Figure out where you want to hang them. Nail the paper into the wall. Then when hanging print, tear paper out and nail is pre-hung in the right spot for you :)

hang pictures and could we add a window!!

Old picture frames with good shapes and details can be easily repainted to match whatever scheme you wish. No glass in the frame? Hang the frame on the wall and tape a picture in the middle for a fun, electic look! (eclectic staircase by Kasey Buick)

A different way of displaying photos. Would be easier to add to than hanging individuals (different colors)

Simple frames of the same color in different sizes on off-set floating shelves with larger framed & matted photos hung on the wall make an attractive "Gallery Wall" layout. (Easy to change too.) Love the wall paint color as well.