Does Anyone know how to make backgrounds for episode?

Hiya! You’ll find that most people suggest editing/drawing software. If you have the means, I personally use Photoshop and Procreate.

Others use GIMP, which is free and much like Photoshop. My best advice is start by editing Episode backgrounds, mash some together and draw some details out. This will help you learn without having to create an entire background from scratch.

That is how I’ve been learning, and you can see some of my work here:

Most commonly, you’ll find a lot of Episode background creators use a process called Photobashing and you can find videos of this kind of art on YouTube.