The first step is to draw a basic landscape sketch using an image of the landscape you want to create.
After you have the basic sketch, you’ll have to draw your own background and landscape elements, like trees, rocks, grass, etc. After that, you can start painting your own landscape by filling in the gaps and adding details.
Here’s a picture of the basic outline of my landscape sketch, which you can see here.
I drew the outline on a piece of cardboard, so that it would be easy to follow.
When I was finished with it, I drew in some lines in a different color for the outline.
The lines were very important for the final look of my image.
Here is my sketch of the outline of a simple terrain sketch using a picture from my book, A Simple Landscape Sketch: