I need some help for my icons

Hello. I need some help.
My 30 people line icons were rejected by envato.
They said “We found it isn’t at the quality standard required to move forward.”
So I want to update or fix my icons.
I need your guys opinion. I don’t know what is my problem :frowning:
It will a great help.

https://www.behance.net/gallery/77907819/30-people-line-icons

hi well did u check that all the paths are closed in your illustrations? since this maybe a reason for the rejection … otherwise, i am not expert of this type of item, for me this is hard to tell u for sure … according to me this, this maybe an issue of “style”, u should try to check what is making it or not in this category , i need a guy or two that does very well in this category - like @voysla - his icons sets are pretty good and maybe giving u a clue to see what people are looking for …