With a landscape image, you can create a completely free depth map at the website below. Then map the depth map to the image.
Here is a short video tutorial on how to add an image (eg logo, eyes, tattoo ..) to a texture in Blender. Hope it help to you ...
Pro insight: Why it works 1. Contrasting form The arc of the curve naturally complements straight lines in a scene, creating pleasing harmony 2. Lead the eye The curve of the bridge crosses the ...