Here is a tutorial for pixlr on how to make this cover:
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You will find all of the required materials in the external link. This tutorial is for intermediate pixlr users, but anyone can give it a go. If you use the tutorial, then please do not use the covers you produce in your examples, and please do not claim it as your own if the cover you produce is extremely similar.
1. Open up a blank image with the dimensions 512 x 800 on Pixlr Editor.
2. Open your first stock image by going to Layer > Open Image as layer. It should be the image of the rocks. We do not need to resize this image, but move it so that it is positioned like it is in the image below:
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3. Next we need to recolour the image to make it black and white. You do this by going to Adjustment > Colour Lookup. A black and white gradient bar will immediately pop up, making the image black and white. Click 'ok'.
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4. Now erase the top part of the image, using a soft eraser brush. Use the 200 soft brush, or increase the diameter (refer back to the pixlr introduction chapter if you unsure of where this is) to 300 to give a greater effect. Rub the image away to about halfway, like so:
