SEO for redbubble essentially means looking for right tags and keywords to increase chances of getting your products ranked. This increases the visibility of products and helps in getting sales.
Please note that Red Bubble artist dashboard will show you traffic volumes. The traffic value would be based on various source: social media, red bubble, organic etc.
Your aim should be to improve the organic traffic at your shop. Organic traffic is sustainable traffic. It actually means that people are coming at your shop after a google search for related topics. This is the reason why niche and keyword searches are very important.
For SEO of existing product or a planned product, first try to see the popularity of various keyword you are going to use in your product page.
You can use this platform :
This platform has two options:
1. Redbubble popular tags
2. Redbubble tag generator
Using the Redbubble Popular tags option we can see the latest trend, popularity of any keyword in Redbubble. Try to pick up a keword which is not very competitive and which has been rising in trend recently.
Change some of the keywords and analyze the results.
After that you can utilise the Tag generator to create relevent tags for any keywords.
I hope this little information helps you in kickstarting your SEO journey.
Feel free to ask any doubts in the comment section.
I will be more than happy to help.