If CanvasBase designer is enabled on your storefront you can add your own templates to your storefront for your customers to use in designing the look of their products.
In addition to adding your own design templates, you can also offer standard design templates by ensuring they are enabled at Main Menu > Settings > Manage Storefront Settings > Settings Categories > Store Setup > Artwork/File Related > CanvasBase Show Default Designs on Store
Step-by-Step Guide
If you are not already on the manage layouts page, follow the steps listed on Manage Layouts in Online Designer to get there.
Click the Create New Design Layout tile to begin creating your new design layout.