Displaying Memories

I am not an expert picture hanger. I think I've tried once and I'm pretty sure it was NOT level! Thus this goal is a little tough to master! I do have photos that are in "non-wall" frames (what would you call that?). But you can only devote so much shelf space to pictures. And so I have grandiose dreams of an entire gallery wall of photos. Realistic? Not really, but I can dream.

I've been trying to do some research (Pinterest counts as research right?) before I enlist my husband in a nail pound, frame hanging, head tilting party. I found this very helpful article from Better Homes and Gardens. In order to figure out the layout they suggest tracing your frames on scrap paper and taping it to the wall. I think this will work perfectly for us because you can adjust it and level it before you ever make a hole in your wall. Perfect!

What methods do you use for hanging pictures? Any suggestions before we take the plunge?