The girl is cute no doubt. I think maybe the problem lies in the presentation. While the page layout and color scheme are nice in their own right, nothing really jumps out and says "Hey sign up now you are missing out." Maybe mess around with how the page itself is layed out. Remember you are trying to excite the user into buying what is behind door #1 so you may want to think about making it a bit less "nice". Go with some more risque pics and colors on a whole.
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