Landing page has been rejected. Please, need your feedback

Dear Expert Authors,

My theme have been rejected today. Review team provided these comments:

“Unfortunately your submission doesn’t meet our current minimum quality requirements for the category it was submitted to. Please consider taking some time to familiarize yourself with our current library and quality levels of popular items before resubmitting.”

Can anyone let me know what should i do to get approved?

Here is my site

Please help!