Split testing is a method for comparing two different versions of a landing page to determine which version performs better. Split testing should NEVER be a one-time experiment. It's important to keep running new split tests, so you can continue to improve your sales and profits.
Setting up a split test is very easy to do. You simply need to determine what element you wish to test on your landing page first. Always be sure you only test one element at a time for your split test. Otherwise, you won’t be sure which changes you made resulted in a specific improvement.
For example, start by testing the headline. Using your current headline as the control, duplicate your landing page and create a new headline variation for the test.