Hi Oliviabest. Looks quite a good website. My only 2 small criticisms would be that I found the navigation a little lacking. For example, if you go to the home page and click on "VirtueMart Shoping Cart Themes" there is then no link to click on to get back to the homepage if you want to make a different selection.
The other thing is that some of the English could do with being polished up. See the link above - "Shoping" has 2 p's. Expressions such as "a vast deal" don't ring true and "The library of FreeVirtueMartThemes.com is updated on the regular basis" should be "on a regular basis". Minor points, maybe, but there are quite a few of those that might put some visitors off.
Like I say, they are only small criticisms, but if addressed they might turn a very good website into an excellent one. Good job!