This is a picture i hve altered using Photoshop. The original image is just above, and my alterations are the above that.

For the first photoshopped image, all i did was simply increase the brightness and contrast.

For the second image up, i fiddled with the 'curves' option, where a diagonal line is displayed on a grph, and you can easily change colours and contast by distorting the line into different curves and patterns.

For the final image, i used a filter for the filter gallery. i chose the option 'artistic' then the 'coloured pencil' option th get cthe effect.