@Mit-Liebe-verbunden,
if you make sure that no parts of the model you’re selling are cut off in the main product image
as they are here, that could improve your sales figures. A little better lighting wouldn’t hurt either. You can find tips for better photos in the Authors’ Forum, which you can access via the category selection. Only authors/sellers can read along there.
It would be good if you could upload patterns specifically for Advent, Christmas, or Valentine’s Day and Easter/spring. You don’t have any of those yet. These themes are always in demand. So if you were to develop attractive models with good photos to go with them, that would be a good idea.
Patterns for scraps/leftover yarn, beginner-friendly patterns, animal motifs, and TV-friendly patterns are always in demand = patterns with simple or repeating designs that you can work on while watching TV.
Basically, your patterns have a lot of potential. With enough time, patience, and effort, you can certainly build something lasting for yourself. Good luck with it.