WebmasterQuery

Install the All-in-one-SEO tool if you have wordpress and adjust your settings so you can do proper SEO. Next, install a premium theme if you can afford one, these always look nicer than the paid once.

And then, as always, add quality content on a regular schedule.

here are the steps you have to follow to improve a site (in general)

submit sitemap to google

Get backlinks from quality sites

promote blog/site in social networking sites

start promoting your site wherever you can.