
The header I edited basically conveys the type of games I play. I play a lot of RPG (Role Playing Games) and they involve weapons like swords. The background (grass) reminded me of a game I used to play religiously, which is League of Legends. The overall image tells the audience that it is basically a gaming blog, and the sword coming out of the book with a blurry magical effect giving it a magical and game like feel.
I found my source images from Creative Commons, and I know I can use the two images after going under both and clicking who it is licensed to and the attributions, and both indicated that I can use the images as long as I give credit and avoid using it for commercial use (Will post the links below).
I had a little background in photoshop. I often used it when I was younger, years ago when I was a member of an online anime forum and we would include a signature (image) which use anime characters and I had to learn how to use photoshop tools to make my own signatures. I only really changed the proportion and added a blur effect on a duplicate layer, and then changing the opacity of the layer over the original layer to add the magical glow effect to the images.
It is different because compared to the other softwares Davison explained, Photoshop involves several layers where you can edit each layer and change the opacity or how much you want shown for each layer. The difference is definitely the number of layers and what you can do in the layer.
https://ccsearch.creativecommons.org/photos/07e621c4-05a8-48ff-9ea0-3f3df4897d56
https://ccsearch.creativecommons.org/photos/114dad01-b5fa-4924-84f4-6b54bd42efa9