Augroups is right on. You need to increase traffic. Normally I would suggest a PPC campaign and set up a test of at least 2 different landing pages. The problem is your site is basically just an adsense site with darn near no content) It looks like Google hasn't found it yet. When it does, it may cancel your Adsense account unless you can come up with more content. Be careful. Good luck, Zeek
You must increase your web traffic, blend your adsense, place it at the top, and pray to the god. I hope it can help you.
As a rule of thumb, Adsense is greatly overrated. I think you would have more success with alternative monetization options such as affiliate marketing (I'm sure you can find some related products) or simply bt selling banners and charging for impressions. Just my 2c. Regards, George