I don't know,
it is hard. The fact is you can have hundreds of designs, but only few will sell. The
Pareto principle is very dominant in POD (Print On Demand), originally it would sound like this: 20% of your designs will bring 80% of your profits, but I would say, it would be more like this: 5% of your designs will bring 90% of your profits.
If someone has a design that sold 5+ times (doesn't matter which platform - redbubble, teepublic, amazon, etc.), this is the winning design you should focus on. Make more designs like this or adapt same style/design for another niche.
The problem is when you have hundreds of designs and nothings sells. And it is not always that the designs are bad, it is that they
are never found between the vast sea of similar items. It is very hard to find a niche in which there would be no competition or very little designs, but buyers would be searching for it. Is that even possible at all with all the tools available today? I don't think so. Even trending designs seems to be heavily uploaded fast. But at least you have a chance, because
new trends are
appearing everyday.
I though that if I would focus on high quality designs, this will be a win-win situation, but now I think that keywords or chosen niche is 90% of your success. For example, you have a super beautiful design of a cat, that really looks nice, looks super high quality from design/style perspective, and you would even buy it yourself. Well, good luck on that selling it in 1 million cat results.
Also, I think it depends on the platform you are using. I have a design that sold 10+ times, it is not much, but it is something to look at. I uploaded the same design to Amazon merch, but did not succeeded to sell a single item in 2 months. I am still not sure how to beat Amazon merch, I keep trying uploading all kinds of different designs there, keep trying to experiment with different text descriptions and titles, but I only had like 2 t-shirts sold in 3-4 months and can't even beat the 1st level (of 10 max design uploads). It is demotivating for sure. I think Amazon is too focused on ratings, and when you have an item with 0 feedback, it is very hard to beat that initial barrier. If anyone has tips on Amazon Merch, I will gladly hear them
