* Review your site’s content. Make sure you have some 50 articles on your site, quality articles I mean before applying for Google Adsense.
* Go through your website’s traffic logs. If you are getting a lot of visitors from search engines, especially Google (since Adsense is a Google company) your site has something good in it.
* Go through some of your site’s pages and see if they’ve got any back links. You can use Majestic SEO for this. If they haven’t got any, build some yourself. While this isn’t a necessary step, but can help increase the Adsense application approval rate as your Adsense applications is directly proportional to your traffic which in turn is proportional to the back links you have!
* Check your site’s social standings. If your site or it’s pages are often shared on Facebook, Twitter, Google Plus or on social bookmarking sites like StumbleUpon, Reddit, etc. the chances are high for your Adsense application to be approved!
* If your site is based on the adult niche, don’t apply for Google Adsense. So far, they haven’t approved any adult website.