Sure thing. We can create a dieline template for you, totally free, for whatever size you need. Just send us a request!
As you're setting up your artwork on the template, please take a look at our Advanced Artwork Guidelines for a checklist on setting up your file, as well as more information on orientation of each panel.
When your file is ready, send it to us at email@example.com either as an email attachment or as a share link to a Dropbox or Google Drive folder. See I'm using a 2D dieline template. How do I place my order? for details of how that process works!