Hello,
I'm not a member of GNOME Web Hackers but i've made a progress implementing the mockup.
@Allan
One time donations and monthy subscriptions are two separated pages, or they open as you click on the div ?
Below are some screenshots of my first try (in my opinion they need some love to fix the minor bugs):
Support GNOME (not finished):
http://i.imgur.com/rue26ks.png
I'm waiting for your feedback.
Regards,