Would be nice to know theme of game, and if its realistic, or cartoon like etc.
For eg. when i am good at hard surface modelling, scifi games etc, it would be easier to create cinematic for scifi. Or when i done some cinematic for anime already, doing it again (because it turns out your game is also anime) is not something i am planning to do.
You not paying for that work it is mutual cooperation (for access to characters, level and environment you expect to have some cinematic for your game).
So, please game art style and setting.