The design is really pretty and it’s unfortunate that you got that message after making it to the “code” round. But this can be a good thing! You can improve until it’s so amazing everyone buys it! It really feels generic now… wonder how much sales would you generate.
All your design needs in my opinion is a really cool header with posts slider like you have now, but much cooler. Something like http://compliments.dk/ (subtle animations on type) or http://ecap.co.nz/ (see that slider below header?). It’s just those little extra special things that will make your design go Ka-boom!