I appeal to the public experience)

Good afternoon, Dear friends!
I am new to themeforest. I try your hand at creating a site template, and received this answer:

MINIMUM REQUIREMENTS NOT MET: Your item does not meet the minimum technical design requirements for this category.

Can someone tell where to go next, what to improve or correct that maybe someone will see any obvious mistakes?
Here is my theme http://flew.dizmarket.net/