Design a Website Mockup (minimalistic)

I'm creating a step-by-step walkthrough for a new user to sign up for my site. There are a few different views involved in this process, but many of the elements will be reusable from page to page. I'm looking for modern minimalism with very subtle drop shadows and gradients where applicable. For inspiration, think of Google's user interface styles. The wireframes I've included are just guidelines. For example, if elements look better without boxes around them, then don't use a box. This also applies to the colors and fonts used. The webpage should be designed at 1000px wide. All fonts used should be available through Google Fonts ([login to view URL]).