How to Align and Distribute Layers in Photoshop Elements 11
In the Layers panel, select three or more layers that you want to distribute evenly.
With the Move tool selected from the Tools panel, click the Distribute option in the Tool Options and choose a distribution option.
The Distribute commands evenly space the layers between the first and last elements in either the row or column.
As with aligning, you find an icon illustrating the distribution types.