Need a author's review for my newly created packaging mockup product

Attached preview is of a Side spout doypack pouch packaging mockup psd product. It will have total seven 5000px psd files for different pouch angles.

Please share your valuable feedback on this one, I want to upload it to my graphicriver portfolio item and your feedback would be great help for the approval of the product.

Thanks,
Umang

The shadows needs improvements.