Try to change your ad unit size, test different ad unit at different location & always try to get high percent search Engine traffic.
Always try to create Unique, Clean, Well Formated content for your visitor, first think for your visitor then money. Search Engines & Human like to see above type of website.
Break up your content into many pages Target high value niches Get traffic from Tier 1 countries (US/UK, etc)
Bro If You Want To Increase Your Adsense Renevue 1st you doing plan for your website : template , content , idea and respect Search Engine Optimisation and use social media for get traffic
Hit forums / relevant blog posts (and comment on them) / social media ... There are SO MANY sources of free traffic.