Draw some outlines for where the mountains are going to be.
step 2 of 8
Copy and paste the source images into the image. Delete unwanted parts with the eraser tool, and complete the outlines with a standard brush. Use a lot of different colors.
step 3 of 8
I changed the color of some of the blue from the sources, blurred some parts and shaped the mountains. Also moved the different parts a little bit.
step 4 of 8
Added some snow, some trees, and reshaped the mountains a bit.
step 5 of 8
Played around with some clouds in a seperate layer, and added some details.
step 6 of 8
Made the clouds more transparent and added some more to get a mist effect. Also used a small brush for the mountain ridges.
step 7 of 8
Worked on the part of the image that is closeby. This time left out the clouds just to see how it looks.
step 8 of 8
Put back the clouds, added some birds and sheep, and blurred some parts to match the image.