This sketch was drawn with a pen, but can equally be done in Gimp with a mouse, or Photoshop with a tablet.
- Define the silhouettes for your mountains. They can be jagged, they can be smooth. Allow your hand to wander and create different shapes. It helps to start with the closest mountain (bottom of the page) and work to the farthest (top of the page)
- Draw the ridge line. Start at the highest point on a mountain and draw a ridge line to the next in the line of mountains. Don’t draw directly to the next peak, offset the end of the line. That will make it look like the ridge drops down and then comes up the far side where it’s hidden from the viewer.
- Add in the details. Here I’ve taken lines from all of the mini-peaks and drawn flowing lines down the sides of the mountains. Add in a few secondary ridge lines running off down to ground level (like the second mountain from the top on the left hand side)
At this point you have your mountain range. Any more detail added with colour or tone will add to the effect, but you can leave it at this and it’ll read just fine as a mountain range. This tip originally appeared on G+ and on facebook.