Hi, just a few thoughts bearing in mind what you've said about only being able to have a limited amount of items on the site, and what you can do re: website design itself.
Firstly - the basic look is fine - not too fussy and the site iteslf is easy to navigate which is always a plus
The picture - looks ok, but I'm intriegued as to what the word is that's 'cut-off' - the white letters? Also the drawings are a little 70s - is there an alternative picture banner you could use? If you can't change it, it's not a big problem.
Fonts/typeface. These are a bit basic - you could do with something a bit more modern. Also I think a bit more text would be useful (see my next point). I'd have "all she wants is..." in one font, big size, as you have. Next para in a different font, a bit smaller. Then a couple more paragraphs in same font as "All she wants is..." smaller size.
Finally, as you're limited in how many items you can have, why not make a feature of it? People are always keen on things that have limited availability or special offers, so maybe make more of that - give it a more exclusive feel?
Hope this helps, and good luck