The agent’s answer
The hardest part of comping, for Donovan, is threading the needle between originality and having a place in the market. Comps let a writer lean on an established premise, but the book must not feel like a carbon copy or a rehash of genre tropes; the writer has to show what makes it different. He invokes necessity is the mother of invention to push writers toward articulating a market need, what is lacking in an oversaturated space, even while acknowledging most writers are not deeply versed in their own market and that the agent is better placed to define it. His recommended move is to position the book as X meets Y but with a distinguishing twist, character, or underexplored angle, and to add a line explaining why each comp fits, since he often receives comps whose relevance he cannot see.