The best thing to do us to ask an expert on SEO to ask their opinion, as every business will be different. However, you can always make a start by using the Moz toolbar to look at the authority ranking of your website. If your authority rating is 40 or under, then that’s where you should focus effort, perhaps by trying to get links from other reputable websites. If on the other hand your authority rating is 70 or over, then look instead at the relevancy side of SEO for your website. If you’re in the middle of the ratings for both aspects, then compare your domain authority rating to five of your main competitors. If you’re rating higher than them for authority, concentrate on relevance. If you’re rating lower, then try to boost your authority score above theirs.