Hi Brian,
Thanks for reaching out to us!
In order to add custom Overlays & Layers, you can upload images to the Photo Basket (at the bottom of the editor) and then drag them onto your main image (or canvas).
You can re-order these layers by using the options that appear when right-mouse-clicking, and you can also erase and fade them, and use Advanced Blend Modes (these options are available on the Photo Properties dialog that appears when clicking the photo you’ve dragged on).
Let us know if you have any other questions.
