The Unicorn Quest: Fire in the Star, Kamilla Benko
Pretty good. Some of the resolutions are contrived: like quite often a last-minute character or plot element comes in to undo all the tension.
And yet, I like how we see this writing "process" this way. I don't think all books should be made like this. It feels like Benko could have spent a little bit more time tying up some of the narrative knots and would then have had a series to rival real classics. But it also shows us that making a story is more than writing it.
So the storytelling may be slightly unpolished, but the series is imaginative, it is original, and it creatively inspiring, because the world Benko has built has potential well outside the story.