Adsense revenue doesn’t depend solely on your themes. Your Ad placements play a vital role in improving your click-through rates and ultimately your Adsense Revenue. Here, 5 Adsense designs are shared that are proven to boost click-throughs and higher earnings from Adsense.
Besides Ad placements, your keywords also matter to increase your Adsense Revenue. Here is a guide on how to find long tail keywords for Adsense. http://www.universalbloggingtips.com/find-best-high-paying-keywords-adsense/