When selecting wall art for your diorama, size is nearly as important as the composition of the piece. An improperly sized picture can either overwhelm a room or allow the room to overwhelm it, neither of which is aesthetically pleasing.
As a general rule, for a wall with no furniture the art (including the frame width if it has one) should take up approx. 66% of the space. This will prevent it from looking lost and allow the remaining area of wall to frame the piece nicely.
When hanging over furniture like a sofa, table, etc. the art should be 75% the width of the furniture. Over the fireplace mantle, it's best not to extend wider than the width of the fireplace opening.
To determine what the height of a piece to choose for a bare wall, keep in mind it should be hung with the center point at the eye-level of your doll . . . don't hang it too high or too low!
If you find several pieces within the same color palette or story which you particularly like, or to display your own mini photography in frames, you can group together those which are all the same size, or create real visual interest by grouping together pieces of varying sizes.
Music is the story behind this gallery composition.
If you choose to do a gallery wall, lay the pieces out on the floor first, allowing the same separation between each one, then measure the total groupings height and width and make sure it follows the same guidelines above for filling up your space.
NOTE: All photos were sourced from Pinterest.