We are limited in our creativity and god-likeness because we are made out of the same material as our creations. We can’t receive worship because we can’t make anything that is truly self-consciously separate from ourselves. But when God wrote us into his novel, we ARE more than that. We can worship him, and we can only because free will exists. We depend on him for every breath, but we are separate from him in a way our own creations can never be separate from us. So once again, be careful with the author analogy!
A perfect identity of the creature with its creator’s will is possible only when the creature is unself-conscious: that is, when it is an externalisation of something that is wholly controlled by the maker’s mind. But even this limited perfection is not attainable by the human artist, since he is himself a part of his own material. So far as his particular piece of work is concerned, he is Godlike-immanent and transcendent; but his work and himself both form part of the universe, and he cannot transcend the universe. All his efforts and desires reach out to that ideal creative archetype in whose unapproachable image he feels himself to be made, which can make a universe filled with free, conscious and co-operative wills; a part of his own personality and yet existing independently within the mind of the maker.
-Dorothy Sayers, The Mind of the Maker, Ch.9