Hey there!
I don't normally respond to projects on Sunday, but it was recommended that I take a look at yours. After reading your description, I wanted to share one common mistake that I see. It's the use of the term "optimize."
In a world where SEO holds such importance to a lot of businesses, it's often used in a way that it almost covers all areas... which is not how SEO or optimization works. For example, I am a Product Description Specialist whom works with eCommerce brands, along with Amazon and Ebay sellers by providing them with "keyword rich" content (including titles and descriptions) that is meant to "optimize" their listings. In other words, my descriptions help the search engines and eBay algorithms to rank and create higher visibility for their items.
If this is what you're looking for... then please contact me to discuss your project further. I'd like to know more details, such as the amount of items you have listed and what your intent is with "optimization" (ie create more visibility, have shoppers click the "add to cart" button more, etc)
Good luck!