There were certain templates that I enjoyed using more than others, mainly because they offered smaller, more detailed designs. With the templates that had larger openings, they required a more stable hand to ensure that it didn't get stuck in the middle of the design.
I haven't played with this tool in many years, but it still works! I might use it to create some personalized cards in the future. With fine point markers, it makes the process much easier and more enjoyable.