Are you up to date with the latest in SEO?
One advanced technique is to create a hub and then go into further detail on multiple topics within that broad topic. For example, the hub for this blog post would be SEO News & Tips while the more detailed section is advanced SEO. We practice what we preach!
Building a brand is another strong way to work on your SEO. Two major aspects of creating a brand are consistency and content.
Finally, don't just let your old content sit! Update it and refresh it to give it new life. This is a great technique that can be efficient and successful.