I consider a project to be "finished" when it no longer entertains me, unless it's something I'm doing especially for someone. Sometimes a project is finished after I've chosen fabrics (my very favorite part). I may get something half done and find I really am not having any fun. Quilting is one of my favorite activities and if it's not fun anymore why continue. Who know? I may go back and work on an old friend years later, or find it a good home somewhere else! ;0)