I think i really like your background color, logo and everything else looks decent as well. Overall i really like your design. 8/10 i will give you.
the green is really heavy on my eyes - it makes it look "amateurish" - try to use 3-4 colors blending in and/or complimenting each other. Green is not a good color to use in one block. I find the site too distracting with too many ads in the middle - makes it time consuming to find what and where you are selling. It is a good idea, though. How many people already bought the product?