It's recommended that you read the Pxleyes Guide found here: http://www.pxleyes.com/courses/pxleyes-guide/

All sources must be added to your entry and be free of copyright and be available for use, the copyright license and usage must be shown on the link. 

You need to list your sources or this entry will be disqualified. Read this about "source images". http://www.pxleyes.com/blog/2013/08/participating-in-pxleyes-photoshop-contests/

There is no need to post the link for the contest source (3: The Horse), you only need to post all other sources used. The sources posted are acceptable since the Wikia sites use the CC by SA license.

Such silly fun!