Photoshop elements: creating a collage

I find that if I want to really get to grips with a complex piece of software I use atomic learning on one computer and have the macbook open. I have started with creating a collage; need the square or eliptical marque tool to cut a section from the secondary picture picture, then select > feather to soften the edges > move tool to attach onto main picture.

I used the cloud show picture as main pic and the face from the my manga gal drawing as the moon!

Below is the outcome or result.Cloud show and manga gal