Shop Integration Plugin Layout Problem

Hello, I installed the plugin woocommerce that works but there is a layout problem. The first "product" is to close to the left side I want it more right that there is a little space between first product and the end of the site. Of course the 4th product is to close to the right side. It would be better if you look on: http://web942.webtest.flyhost.de/wordpress/shop/ I tried it to solve with the sidebar settings but it dosen´t change anything. How to solve?