Just to clarify, at this time we do not have software to make thumbnails for our customers "Custom Templates". The default image used for custom template is the "No Thumb Available" image. I would highly recommend using a naming scenario much like Wham922 or DLOHO does so that you may tell your templates from one another at a glance. If you would like for us to create a product that would do this function you may leave a suggestion at this main topic " Suggestions " on the community boards.
Thank you,