Source: LifeHacker Eye Level and Lining up With the Middle: I really like this tip on how to hang pictures. You really want to make sure that it’s eye level and each picture no matter how tall or short, is lining up with their middle. You don’t want to hang a short photo (or piece of art), and line it up with the top or bottom of the long piece. How to Hang Art Above the Sofa Source: interiorsPL Now this one may not have any specific tips on why you
Geometrical arrangement: Remember to give to the most important piece a central position, just at the eye level... Then, separate 2 frames with same size by a smaller one. This give to your lay-out rythm and energy.