My constructive criticism is:
A. In your store, move the description tags closer to the thumbnails they are associated with. The way the table is setup in the code, it looks like the pictures are vertically aligned to the top with the text row below the picture. With the close spacing between the description tag and the following picture, it makes the text closer to the picture below than the one above. Or maybe move the text description above the thumbnail instead of below.
2. Make the pictures to where you can click and blow the whole thing up, instead of just being able to zoom in on a given spot in the picture only.
Otherwise, it's nice and clean.
How about a magic box that incorporates everything?