The first three words of your titles are the most important for search. So make sure the first three words are keywords that someone might use to search for your product.
Write your 'About' page. People love to see the person behind the shop.
Also, make sure the majority of your tags are more than one word. One word tags are too broad for you to show up high in search results, usually. So use short phrases that someone may use to search for your product (like in your first three words of your title. Same concept).