project rejected help me how to follow step by step method for my next project approval

recently i’ve uploaded a project the review by envato market was like this-

Well, this is awkward…

Thank you for your submission. We really appreciate that you chose VideoHive to sell your work.

Unfortunately, after reviewing your item ‘Name here - Exclusive Intro ’ we found that it’s too far off the standards we require, so you’ll be unable to submit it again.

my humble request is please help me in this issue. So that from my next project i will try not to do mistakes.
Thank you…

how we should help if you do not show us an item =)

sorry, i am frustrated and i’ve deleted.

So, am asking tips for my next project approval

and my doubt is how to upload 960x540 preview video in high clarity…