You should include more information about the game and the kinds of assets you need. For example, is it RPG view, a side scroller, something else? What sort of style are you looking for? How big are the assets? How many characters are there, what animations do they need? How many environments are there, and are they to be made of tiles or drawn as whole environments?
Artists need to know approximately how much and the type of work they'd have to do before they can agree to do it. Most will not bother to PM you asking for this information, you should provide it up front.