I think he is doing a great job. In my case, I needed to tell every detail and super clearly lay out the design concept, though I thought he kind of has the feel already for book design, as we had already a few projects together. After this, it went on very well. He is definitely talented. What I recognised that even if both do their bests, there are often minor (spelling or alike) mistakes that can take a lot of time to correct and this requires a lot of attention to details every single time. I appreciate him for being precise in file output, transparent with pictures and copyright, making through all these correction rounds, and in the end creating an amazing work. Thank you for all your work. All the best! Amie :-)