By doing suveys and tasks. Did you filled your profile information in profile page of surveys. If not do it now to get more surveys.
By upgrading your account to premium you can earn more.
check this link for premium accounts
My Account: Premium Account - ClixSense
Go through the above link and upgrade your account. You can earn more by completing the check list bonus by 16%. You can invite your friends by sending your link to them. By referring others you can earn more.Be sure they are active always then you will have more earnings.
All the best Fisland