Theme Rejected [ hard ]

hi every one as I am new in this community and I don’t have much knowledge how it works.
Recently My first theme has been reviewed and hard rejected with the following comment.

"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 has an interesting starting concept, but it 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 did not really understand what changes have to be made or what parts of the theme need to be fixed before re submitting theme.
Can i Resubmit it again .?
If I can resubmit my Item Again then what are the necessary changes to be made first.
Please give me detailed answer as i could not retrieve the answer from any source.
Here is a demo link of my theme


(note : there is a minor issue with a slide of the slider which has been fixed locally but i have not updated remotely that file.)

With respect there’s no simple answer as the whole thing need s completely overhauling and starting again from the basics up.

By the time you could resubmit then you would need to have created something completely different.