SL Models

Your Role as a Model
There is a hierarchy - a food chain - in the modeling industry. We won't deal with staff like stylists, but in the chain you will find yourself in, it works like this: Clients rule the world. Advertising agencies speak for them - they generally determine who will be used in any campaign, although they may delegate some of that choice to a photographer. And from a photographer's perspective in the commercial world, the ad agencies (or in-house equivalent in the corporate world) are who they have to sell themselves to.
On a shoot, there may be a client rep or ad agency rep present - an art director, for instance. If so, they call a lot of the shots. Photographers have a fair amount of freedom in many commercial shoots, but ultimately their work is commissioned by the agency, and they do listen.
And on that same shoot, the one person who takes direction from everybody is the model. (S)he is at the bottom of the food chain. She doesn't hire anybody, she doesn't give anybody directions, she doesn't determine the creative direction of the shoot.  That is the responsibility of the art director or the photographer.
A model is a commodity. There are lots of them out there, and it is a competitive world. The ones that get hired are the ones that, first, have the look required to do the job, and second that other players higher in the food chain like to work with.
Models who want to argue, or even tell people that they are doing something wrong, are simply not wanted. You can be right. You can exercise your right to speak. You can be unemployed.
If you want to be part of the decision process, become an art director or photographer. Not a model.
We don't mean to imply that a model is not part of the creative process (we can hear the models screaming now) - but as the collaborative junior partner, whose job it is to be helpful and creative when asked, and otherwise to be quiet.
What we have just described is the reality of the world you commercial models say you want to enter. There are lots of individual photographers out there doing their own thing that these rules apply to much more loosely.  And even for them, the rule applies. If you want to be hired (in any field, not just modeling) be someone that your employer wants to work with.