- Use <h1> tags for the page titles.
- Put white 1px borders around your thumbs to make them look sharper.
- Use more distinction between outlinks, recips etc
- Stay with one font (warning page uses both times and arial)
- Use different sales text on each page, don't copy/paste
- Take advantage of your thumbs' alt tags
- Toning down the red background would help as well
Other than that, pretty good first attempt.
Now just read some more on Freesites and start churning them out once you get the hang of it.