First, congrats on making something.

Second, I don't think HN is really the place to get this kind of feedback, but that's just me.

That said: It looks crowded, and a few things seems not to line up. You seem to like a clean, minimalist grid layout (I do too, often). However, the grids and the typography need to mesh and flow well.

For example, "Featured projects" seems to float about midway alongside "Mario Sangiorgio."

I would suggest looking at Typogridphy

  http://csswizardry.com/typogridphy/preview/#

or perhaps Twitter Bootstrap, and then poke around

http://www.minimalsites.com and get a feel for how grid-based minimalist sites tend to work. Not that you should copy anything there, but if you look at enough of them you start picking up subtle features.

You have more room on the page, make some use of it and give you content room to breath.