Looking for a graphic in this style, theme Halloween: https://www.mochimedia.com/static/dev/images/g_bg_header.jpg P.S. The same height as the blue line. Then the image is ending - it should match the beggining (if longer desktop) Small houses, creepy trees, pumpkind, stuff like this. Please PM me with offer and demos of your work... If I choose to work with you, I will be a regular cutomer for dirrefent themes for this graphic, like winter, Xmass, Valantines day, and so on....
If you don't get any responses from designers, you might try some of the stock photo sites (fotolia, crestock, istockphoto). They have illustrations and background style images like you are looking for.