While one could quibble about whether the text is or is not a part of the art, it would seem useful to tell the artist where the text will be placed or some options so that the artist can juggle cover space. If the text is to be placed in a certain part separate from the art, then that should be stated. It would also be useful to know if there is a particular theme in mind. What do you mean by "Fantasy"? As in imaginary book, or in a period or genre called "Fantasy". There's a hidden assumption lying around here, i think

Gordon