This model was created to be a fully modular way in which to hang pictures on the wall.  The design allows for pictures to be placed with either orientation, go around corners, and/or be in groupings as large or small as one would want.  You can be creative in how you connect the components. Note: An undercut on the back side provides for mounting of pictures. 

Tips: (1) the bowtie-shaped bracket with the hole is for nailing it to the wall using a 16-gauge brad nail or you can use it to prepare a pilot hole for a #8 screw. The undercut slot for the screw head in on the back side.  (2) If needed, use some museum putty to hold against the wall at edges. (3) For extra picture security, I recommend to use some small pieces of tape.