Thanks to the advancement of photography software (Preveal) preparing a sample wall gallery has never been easier. All you need to do is find a beautiful family to photograph,  place a piece of paper on the wall of your choice and take a picture of the wall space. Based on the paper, the software is then able to determine the dimensions of the space so you can drop in photos and see which sizes and configurations work best. 

Without the ability to see what the final wall may look like it is very difficult to get a sense of appropriate print sizes for the wall space. As you can see, a typical 5x7 or 8x10 would have been too small to have any impact. 

The sizes ordered were (2) 11x14 (2) 12x12 (2) 16x24 (2) 12x18

Below is a Before and After. The Before is a simulation on a blank wall. The After is the actual canvases hanging.

Before:

BeforeSimulation on a photo of the wall space

After:

AfterActual Canvases on Wall

And the adjacent wall a 24x36 (hung a bit too high!)

Wall Canvas