This is a lovely seasonal picture book. It's great for "spooky season," but it isn't exclusively about Halloween. Instead, it covers major events of autumn beginning with Back-to-School and ending with Thanksgiving. That gives it more flexibility than some seasonal books, as it could be read any time between late August and late November. (Of course, children are often willing to read seasonal picture books at any time of the year, but if you're thinking of when to incorporate it into a classroom or reading circle, it's flexible.)
The artwork is gorgeous, done in shades of orange, brown, beige, etc. Thanks to that palette, the whole book is a riot of autumn color, and I love that about it. The color scheme might be my favorite thing about the book.
My only criticism is that there are a couple of places (1 or 2) where the meter/rhythm seems rough to me. I have not gone through and formally scanned the book, so I can't tell you what the issue is. I just know that there are couple of lines that don't sound quite right. Still, that's a minor issue, and it doesn't stop me from recommending the book.