>>8758643
What are your references like? Is it the character design or the scene that they're not getting right?

It helps to include very specific or even illustrated details and guidelines about the stuff you want to make sure they incorporate, it might just seem clear to you but be more vague to the artist than you think.
I relate to this feeling though, best I can do to deal with it is just get super specific or find the right artists for the job.
Sometimes artists can surprise you by giving you EXACTLY what you wanted out of the blue and sometimes it takes a while to get it right, it's best to look forward to getting the general idea of a thing in most cases.