Picture Layout - lay out your pics as shown on top of a piece of clear plastic. Lift each picture individually and mark where you need to make a hole using pen on the plastic. Once all are drawn on, remove pics and place plastic on wall, drill through each mark and hey presto, each picture wall-mounted perfectly- need to do this in living room
Gallery Wall! LOVE! This website also has great design templates! Start with hanging up paper on the all that is the same size as your picture frames. This way you can experiment with different layouts and see what you like best.