tips to improve your adsence earnings

First of all,  my suggestion is,  use both  Text  and and  image ads.
Because   some   people   are  using just  text  ads.
well.lets force to our tips.

• 1.  Follow the Adsense rule.
• 2.  Choose the best paying niche for your blog.
• 3.  Find the keywords according to it.
• 4.  Place the ads on top of the page.
• 5.  Use Image+Text ads on your site.
• 6.  Use the same color for your ads background.
• 7.  Choose the right format for your blog.
• 8.  Use Adsense in RSS feed
• 9.  Use horizontal ads near to menu bars.
• 10. Remove or change the color of your ads borders.
• 11. Promote your site with Adwords.
• 12. Create some multiple ads banners.
• 13. Use all Adsense features.
• 14. Get some quality backlinks.
• 15. Block low paying ads.
• 16. Use Adsense preview tool.
• 17. Keep Ads on Top of the content.
• 18. Write some fresh content
• 19. Don't use common blog words.
• 20. Join Google affiliate programs.
• 21. Join Youtube partners.
• 22. For along article keep ads on middle of the post
• 23. Don't over block ads.
• 24. Use section  targeting.
• 25. Don't do any cheat and, try to get SEO traffic.

I think these tips are more helpful to you.