There was never a change without a valid justification and you were open to dialogue which ended in a mutually approved draft. You were quite insightful and enthusiastic. The enthusiasm counted for a lot and eased the sting of any criticisms or change requests. All your changes seemed well-informed and came from a place with an eye to improve the story. There was no feeling that you wished to stamp your influence on it or were heading off on the wrong path. It all seemed to be good-hearted, effective prose-polishing and I got a general sense of the writing getting tighter and dead wood being shaved. Which is exactly what a person would pay for.