I believe planning up front for any size of a website before coding really pays off in the end. Here are a few wireframes I made for the Dallas Design Supply site. As well, I coded the full HTML5 site using a mix of H5BP and 320&Up.

 
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Dallas Design Supply homepage wireframe
Dallas Design Supply homepage wireframe

Wireframe showing the basic layout and sizing of elements

Dallas Design Supply page elements
Dallas Design Supply page elements

Individual containers of page elements footnoted here.

Signup form wireframes for Dallas Design Supply
Signup form wireframes for Dallas Design Supply

Signup form steps (dynamic regions outlined with dashed lines)