Get soft-rejected from themeforest in terms of aesthetics

This is my first wordpress theme. I have the following soft-reject from themeforest:

Unfortunately ‘WordPress’ has higher standards in terms of aesthetics. An approved design in other categories does not guarantee an approval under ThemeForest’s WordPress category. Your design needs significant improvements in terms of aesthetics and attention to details.

As higher quality items become available in the marketplace, approval requirements will increase to maintain appropriate marketplace quality.

While I’d be able to provide feedback as to how to get this approved, I can only do after it has crossed a certain threshold, quality wise. I’m sorry to say this isn’t there yet. I am afraid we are now only proceeding with a full review on items that really stand-out and have been carefully crafted.

They provide me following screenshots :

what is the problem in design. Please help.
Demo Link: