In A/V Comm we have done many things with Google and Photoshop.
The Basics
Here are some food layers we made in Photoshop. The first one is a burger, and the second one is a taco.
Photoshop Basics
Here is a basic mandela we made using the paint bucket tool. It was pretty easy, and it ended up looking nice.
This is a "client graphic" we made over a random student in our class. I chose Serenity (mostly because she sits next to me) and she was an excellent client and helped me with the graphic.
Here is a google slides presentation we made for Hispanic Heritage Month. I did mine over a 6th grade teacher, and you can see it below.