sometimes the best advice is what you want to here the least. My advice is to make borders. Good-Tutorials.com is the best reference to all photoshop related tutorials in my opininon. With a quick search of borders I came up with these:
http://good-tutorials.com/track/8738
http://good-tutorials.com/track/13650
http://good-tutorials.com/track/6284

Just a few, but there are many more.