Don't know if this is what you're looking for ,but Dave Brethauer has a great new book out called "Card Design". Its 21.95, but well worth the money. Great photos and design techniques. Also tips on watercoloring and using colored pencils, materials and instructions. I believe I got mine from Ellen Hutson....
http://www.ellenhutson.com/servlet/StoreFront
She has great service and fast shipping.