I don't have much experience with batiks yet, but recently used some that had a Southwestern theme....turtles and lizards and such. If I looked closely, I could see that the design edges on one side were not as crisp as the other side. So I chose the crisp side to be the right side. I don't know whether that will works with less detailed designs. But I love the ease of not worrying so much about right and wrong sides!
Anita