How can I improve my method?

Hello,
i use AdworkMedia Link Locker to earn money in PPD.

Actually i am uploading video with link to zippyshare in description. When user download file from zippyshare, inside is encrypted ZIP file and TXT file "password" with link do AdworkMedia Link Locker.

I have about 150 downloads per day, but i have not much clicks and leads... Here are my stats for this month:




Have You any idea how can i earn more money from this? I have good ammount of impressions but small ammount of clicks and leads

Thanks