attractive branding of ads can make your CTR high also use more 336*280 ads on website also go for text ads than images ads will increase your CTR for sure....to increase CTR don't click on your won ads lol....
Those're main sorts to analyse. The ads should be hard to identify as Ads but easily seen by the users at - instance of your page loading - users finished reading the content. - users want to navigate to other pages. Please remember that higher CTR isn't always equal higher earning.
Other than changing ads placement, blending, you might want to make sure that your content doesn't give every info that the visitor is looking for so that the person is more likely to click on ads.