Always think about your visitors: What are they looking for and where are they from? Therefore, spend time on researching the right keywords to optimize your pages for and always focus on keyphrases that feature location information, if that’s important for your website. If you don’t care about these essential thoughts, all further efforts would be useless. Keep in mind to focus on the best anchor texts for your links and look out for quality links over quantity links. And as mentioned before many times, write unique content that’s worth reading. This article shows you many common mistakes and how to tackle these topics http://blog.kissmetrics.com/seo-mistakes/