Front Page Sidebar 1: “Recent Posts” widget issue

Hey guys,

So I want to replicate the same thing you’re using on the front page of your demo: a featured post (slider), and 4 small thumbnails in the right of it, that looks like this:

In order to do this I’ve used the “Recent Posts” widget in the “Front Page Sidebar 1” widget area like this:

And instead of looking as it is on your demo, the thumbnails are HUGE and they look like this:

Any idea what I’m doing wrong? Thanks a lot!