How to hang pictures. This is a nice guide with a lot of different ways to make it work!
Wall arrangement ideas. More
cool gallery-wall-too-straight... by http://www.99-home-decorpictures.us/eclectic-decor/gallery-wall-too-straight/
Frame arrangement...mom wants me to help her update pics in her house. Could be good ideas
gold gallery wall from Fixer Upper | Rachel Whyte
I like the mix of decorative pieces and frames in this arrangement
Never sure how to arrange your pictures/paintings on the wall? Have a look at these diagrams for inspiration!
A website with a plenty of frame arrangements - great if you don't feel like messing with paper shapes of frames and tape.
this post explains how to set up a wall gallery/ collage by an actual person using ikea frames