There is a number of ways to push your website in a top rank! But there is a one item the people always missed to keep your website "fresh". A lot of search engine like those websites keeps update itself. They believe this kind of websites are still "alive". So, the best way to accomplish this task is adding a news section. You can add some promotion about your shop, any major milestone about yourself, etc. You need to keep adding some new contents. Keeping your website to the top of list needs your hard work!