To create a form for Karatemail2, follow the instructions on our related help page. Once you have created a form asset and published it, Karatemail2 will automatically detect this and add you to the newly created form as an administrator.
Note: The first person who publishes the form will be set as an administrator. Any one who publishes the form after that will just be added as a viewer. For more information on what these roles mean, check out our page on managing roles of form users.