Here are a few tips;
Look into Meta Tags that go into your between you <head> tags, you definitely need meta keywords and meta description. Your meta description shows up on google when your website is displayed. Your title is the link on google and the text underneath is your meta description.
<h1> should be the main title of your webpage and should describe what your website is about.
<h2> - <h6> should be sub headings. I notice you jump from <h1> straight to <h5>? These should only be used for headings. These should also contain keywords but not over the top, make sure you dont have a high keyword density.
Check out your competitors and see what keywords they use but dont just copy and paste.
You need to work out what keywords you need to focus on, words like Free, Logo, Design, Designer, Unique ( you will need more) are good but try not to repeat them to much or google will penalize you if you keyword density is to high.
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Make sure all javascript and css are in external files as google bot only read a certain amount of text from your website and bases its decision on that (whether your website is relevant to the organic search or not).
Get a google webmasters tool account, create a sitemap both HTML for your users to visit and XML for search engines to read. Make sure you submit them to all the major search engines.
An important SEO tip is DOFOLLOW back links. You need quality back links and quantity, set up an alexa.com account and claim your website, it's not important but it helps. Go to blogs and post comments, post your site in directories.
There are plenty of things you can do to enhance your websites SEO, these are only a few ideas and tips.