Collages in Photoshop

I've been working on figuring out how to do photo collages using Photoshop. Here are the first two attempts:

First, a collage made from three photos taken on last autumn's camping trip to Grand Marais, MN.

Second, a collage made from pictures of molded fiberglass trailers that we saw at a gathering of Boler trailers at Murray Beach in New Brunswick, Canada, last summer.

My next project will likely be to create a collage of images from Peggy's Cove in Nova Scotia, Canada. It is such a lovely place.