I've submitted to Craftgawker at least 4 times and been turned down each time! What exactly are they looking for. Maybe I don't understand the concept!
Sometimes they tell you, sometimes they don't. They like very clear, natural light, not over-exposed photos. Sometimes it seems like there's no rhyme or reason.
Craftgawker has been very great for me. But I never submit items from my Etsy shop, only DIY tutorial posts from my blog. I think it's more focused on craft projects, than products for purchase.