Checking Your Collage for Flaws and Consolidating Layers in Photoshop

When you begin a project, you may think you know what you want the final result to look like. But as your creative juices start flowing, you may decide that something doesn’t look right. For example, as I was working on my collage, I discovered that the sky behind and above the canyon was a little on the ordinary side.
1. Open the saved collage file and open a new image that you want to incorporate into the collage.
2. Select the part of the image that you want to add to your collage.
3. Using the Move tool, drag the selection into the collage.

Be sure that before you merge your layers, you will never have to manipulate them separately, especially if the elements on the layer overlap each other, as mine do.

To consolidate two layers, follow these steps:
1. Select a layer in the Layers palette and click in the second column next to the layer you want to consolidate it with.
2. Choose Merge Linked from the Layers palette pop-up menu.
The two layers merge and become one.
3. Choose File-->Save.