I once saw perhaps the best looking tea website I had seen online. Made me want to buy tea even though I prefer coffee. Site's name was goldentipstea.com. I think it was a custom made shopify website but I don't remember.
Here's a website you can look at to get some ideas to help you improve your tea site.
Consider adding a little bit more info on your product pages. Your product images look good to me. Products with white background that's always good.
See this link just as an example. If you can tailor your product page to look similar to this concept your sales should go through the roof.
Just my two cents