Email Templates Rejected

I dont know what I missed in this item but themeforest rejected my uploaded items.
I want to know reason why its rejected.
Please Guide us
Please check below URL as Demo.

https://krishtheme.com/email-builder/christmas/demo/

Hi, I believe the design looks too simple and a little bit out dated. The graphics elements doesnt seem to have premium look and feel.

Hi,

Sorry to know that your Item got rejected. Please don’t panic and study more how to improve the design quality. Your email template is not premium quality. Please give focus on Color, visual & typography hierarchy, spacing and alignment. You can check Trending Items on Envato to get an idea.

Thanks

Thank You for reply