What are the roles of both the artist and author of a shared manga project?
I'm an artist who is currently collaborating with a writer and it's my first working with someone else so I am not sure how it's supposed to go.
I know my role is the art but what I am referring to are designs of the characters and such, the writer already has a vision for how the characters should look like but they are not... dynamic enough (I think that's the word I'm looking for) and the characters seem to have no personality (I think that is mostly due to the writing which we are working on but even the character that seems complete doesn't have that cool of a design), like the character seems flat, like even with simple designs like Luffy you have the signature straw-hat to identify him but the MC of the manga just looks plain, so I'm wondering how much of the design can I change or how to work with my writer partner on this.
how much control do i have over the designs and what is the limit?
also about the art-style, is that entirely up to me or what?
I seriously don't know so please help >_<