art quilt is just a term referring to a more abstract style of quilt design. paper piecing is a technique that can be used to put together any style of quilt block. it is exacting to do and has exact results for careful matching, but just be prepared, it is extremely slow to do. you'll have to try it to see if you enjoy it, but most of the people i know use it sparingly for specific types of trim but others enjoy the detail you can achieve...just try it and see if it is for you...