I have been playing around with Skyrim images on Photoshop and produced some wonderful works of art as a result. Here I show some very simple ways to have a go yourself.
Here is the original image taken from the game, I think this game is so well done that the screenshot is a work of art in itself!
You can see how easy it is to manipulate this image in the below picture. Adding a simple patchwork filter to the image produces the following effect, making it seem as is the image has been stitched together:
Another filter can be applied to make the image look like it has been drawn with chalk on a blackboard:
Using a brush stroke filter you can achieve a nice little painting look-a-like:
Finally, you can really go to town on manipulating an image, it took me a whole five minutes to make something that looks vaguely like I have drawn the whole thing with a pencil! Have a look below: