In February I went out and took photos of the Supermoon. For Halloween I added clip art that I bought and downloaded for free to create my Halloween montage.

Canon 7D Mark II camera, Sigma 150 to 600 lens, Gitzo Tripod

Edited in Lightroom and then in Adobe Photoshop. I used some Halloween clip art and bird brushes which I bought a while back, and then a free witch on a broom from the internet.
The original moon photo was from a Supermoon in February of this year and then the clip art was added in layers.