How long is a picture book?
The number of words is not the crucial issue. Books range from several words to several thousand (compare Goodnight Moon to The Polar Express). More important is whether or not your book reads like a picture book — succinct, musical, pictorial. A key issue is the fact that picture books are 32 pages (storybooks, which are often fairy or folk tales, are sometimes 48 pages). Leaving space for titles, copyright, etc., your manuscript should break naturally into 28 to 30 pages, or 14-15 “spreads.” Some publishers appreciate authors “dummying” their manuscript–breaking the text into these spreads. Each page should be a “scene.” This is a useful exercise because it shows you whether or not the text has drama and is illustratable.