#1 Do not purchase a new domain unless you have to !
Don't expect to rank high very fast if you choose a new domain.
#2 Your target visitors are more important than search engines
First take care of your customers, and take look after search engines.
#3 Carefully pick your keyphrases
Know what your visitor look after, and take advantage of that.
#4 Make your website crawler friendly
No flash, javascript or session ID's
#5 Label your internal text links and alt tags on images as descriptively as possible
Pick the right anchor text for your links.
#6 Keyword rich content
Write fresh and unique content.
#7 Take special care of you pages' title tags
Be careful on the most important meta tag of them all.
#8 A little bit of on-page SEO
Bold and italic text, headings as well as folder and files name, all need your attention.
#9 Make your site link-worthy
Build a good image among other webmasters.
#10 Quality link building
One way links are what you're looking for. Reciprocal links are less valuable, but don't refuse them. Stay away of link farms.
That's just about it. Follow these guidelines and you should do better in your optimization.
More detailed information about these seo tips on the chml srucnoc website