Many POD stores look like a collection of unrelated uploads because each design is treated as a separate experiment. That may create short-term variety, but it makes long-term brand recall much harder.
Define a few repeatable rules
Choose a clear tone, limited color tendencies, typography system, and mockup style. Your products do not need to look identical, but they should feel like they came from the same studio.
Carry the identity beyond the artwork
Store banners, thumbnails, packaging inserts, email tone, and product descriptions all reinforce the same brand story. Consistency increases trust, and trust makes pricing easier to defend.
Brand identity in POD is not about being corporate. It is about being recognizable enough that one good purchase can turn into a second.