To get a better looking back, you should focus on all four of its muscle groups. Exercises like forward back bends and power shrugs will improve the look of your upper back, while leg lifts and back crunches are great for the lower half. Working out your whole back assures that you'll be able to see the results of all your hard work.
Hopefully with all of the information you've learned from this article you can start forming strategies that work for you towards your fitness goals. If you think the strategies in this article can benefit someone you know don't hesitate to share the information you learned, who knows one day they might do the same.