So you need to purchase this license only, if you intend to sell your art work on "Print On Demand" sites, or print on demand basic of your own.
By purchasing this license you can use all the kits you have already purchased and the kits you are going to purchase, to create works to sell on "Print On Demand" sites.
This license does not allow you to create content with my images (whole or any parts of them, as is or altered form) to new kits, collage sheets, DVDs or any other kind of supplies.
My email address is firstname.lastname@example.org.
If you have any concerns, not sure about how this applies to you, comments or questions, feel free to contact me.
(The exception to this are all Sebastian Michaels's Photoshop Artistry students. This license is included to the course).