Better Abs exercise for a perfect look

To look fit and healthy one should take care of his health. The topic on which I am going to discuss today is: Abs
You all know, its very difficult to get good abs. A perfect look comes with perfect abs muscles which need to be worked out on a regular basis.
Thus I am going to share few ideas to train abs muscles that will help your stomach look better.
1. Repeating the exercise every time will not reduce fat: Workout with Abs depends on quality and not quantity. Hence, doing 20-25 crunches all the time will not work. It is wrong.
2. You should not do ab work in every workout. Your abs are like all other muscles in the body, they need rest. If you keep on exercising on abs and breaking the muscles down, they cannot recover to gain the results you want.
3. You should increase the range of motion by using a fit ball or some towels placed underneath your mid to lower back. This will increase your flexibility and you will feel light and tall.
4. Always prefer to train your abs at the end of your routine except under the circumstances that they've been already worked during a core training routine.
5. You should try not to give yourself too much rest in between the set of the ab exercises. You should perform 10-15 repetitions and rest not more than 20-30 seconds between sets and make sure that you don’t take a health drink or water or food in between, this can affect your health adversely.
6. Always keep a point that you should keep on changing the exercises you perform. Try not to stay with the same routine every time. Try different exercises after some time and keep switching to next ones.