Did you do wireframes or page description diagrams?
I always need something to help me conceptualize what it is that I want to build, more than just a few bullet points or flowcharts. As a designer/developer, I find it easiest to just dive into photoshop and mock a few things up, even if they're not what I would consider final designs. It helps me think about how things will work, and what the user experience will be like.
If I'm working on client work, then I always do wireframes first (giving a choice of three different layout/UX concepts). But for WIL, because I was working for myself and under a self imposed time constraint, I went straight from sketches --> PSDs --> CSS.
I'm going to be revamping the profile pages in the near future, and that process will almost certainly include wireframing, since I have more time to do it "right".
I always need something to help me conceptualize what it is that I want to build, more than just a few bullet points or flowcharts. As a designer/developer, I find it easiest to just dive into photoshop and mock a few things up, even if they're not what I would consider final designs. It helps me think about how things will work, and what the user experience will be like.