I will not do any Thumbnails but this is here to help people know how so there’s less request
So first of all find what your gonna make it on, like sketchbook or pixlr, or just normal sketching, make an list of what you want.
If you are gonna have a horizon then make a horizon line, if not then ignore this step, if your gonna do multiple landscapes to make depth or hills then make curved lines across the art, and if you put gims in it then make them smaller the farther they are away.
For the gims you can find gims for reference and sketch them or copy and paste the photo, I suggest using gims that relate to your art.
This is a duplicate guide and frankly not as well-made as the other two that Fruity posted.
I’m going to move this to Devices and you mark a solution, please, sot this can close.