My first impressions:
1 You call it greenshopping, and yet the colour scheme is dark grey and blue!
2 There is nothing green/eco/natural about the design - eg no background images of leaves/trees/foliage/planet.
3 There are no words as to why this website helps the planet - eg put some sort of prominent words as to what your website is about "companies/products that are green/eco friendly/help the planet etc etc"
Hope some of this helps.