How to get best results from SEO for a site if you've changed the title tags and images?

Back links are the next step in the process for you. 

There are many types of directory sites can submit for free, and can use their accounts as Delicious social bookmarking for connecting to your site. If you have a twitter account, be sure to peep about it too. This will help to create some instant buzz, what Google really seems to be valued at this time.

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With blogs, you want to make sure your link uses keywords in the anchor text. What this means is that the link using the keyword as the link. This will help you associate the phrase with your site, and help improve your search rankings. Keep in mind that SEO is a longer process, so it is essential that you continue to find quality links every month to keep improving and stay on top, once you get there. With only five keywords, this should not be a too time-consuming task.