Well I have got the answer!

The whole game depends upon the Placement of the ads and the color.
Suppose if you’ve got a site with the white color background then you would use the freshmint color pallete for your adsense section.
Suppose if your site has a dark background color the use adsense palletes like Black ink one.
Dont make your site look as if it is begging for clicks.
Make it look More professional.
And always Try to chose the right placement and size for your ads.
If You want to display a banner on the top of webpage then chose the suitable size i.e.720X90 banner.
Also you should learn to distinguish between text ads and image ads.
According to me the image ads are more effective.
You should try to put quality content rather looking at the quantity.
Your posts should be able To hold visitors for a longer time.
You should also Have good and powerful keywords.
You can get the list here