Layers

 

It is important to understand what Layers are and how they contain different image aspects.

There is a practical task in your Montage file, open that file and have a look at the original montage you first saved as a .PSD file, not the .JPG (Final) file, which does not have layers.

Open the .PSD file.

Make sure the layers window is open. Windows/Layers.

The Layers dialogue window below shows the Background and four layers. Each layer contains an image. If you have a layer that you want to delete, it's simply drag the layer into the rubbish bin bottom right.

If you need a new layer - select the icon at the bottom second right.

Should you need to duplicate a layer - Layer/Duplicate Layer.

Once you have completed your image and there are no more changes, you can save the finished image as a .JPG. But if you think you may need to make changes, or the image is incomplete, save the image as a .PSD, which can only be edited in Photoshop.

The image for the above as a .PSD and as a .JPG.