In fact, in some ways, I actually feel much more confident about the quality of Carousel than I do about The Cottage Builder's Letter: probably because of its cohesive nature.
I think, for me, humour needs to be used like a strong spice - sparingly.
With 'Carousel' I had an idea and it all came out quickly.
A sequence works in a way a collection never can.
I guess there is also an element of deliberate change involved. Each of my books has been, at least from my point of view, radically different from the last.