Editing your variations can be difficult to find at first. Please, follow this guide to learn how to do it.
Access the Experiment Summary
Via the Experiences List of your Project. Just click on the "Experiences" menu item on the left hand side of the screen. Now, for each experiment listed you will have a small "Pencil" icon. Click on there to edit your corresponding experiment.
Access the Variation from the "Experiment Summary"
Once in the "Experience Summary" you will be able to access the variations in the "Variations" Section. Click on the pencil beside the variation listing to edit them.