Try some other Filter effects to give the background a nice look. The filters under the Artistic and Brush Strokes categories are usually pretty cool. Well, we’re done with the main background, now it’s time to add some more details – textures and grunge brushing!
So, are you more interesting in adding texture to your background, or just grunge brushing hanging off of the corners? The quickest is probably just putting a texture over the top and changing the layer modes/opacities, so let’s give that a go. Start by downloading this texture of moss on rocks, then copying it into your document.