Last but not least for your Alice in Wonderland book is to create the cover. I like to save things like book covers or website home pages until the end that way the interior pages don’t get neglected.
I want to emphasize that book cover should look like a real book cover, so include things like fine print, barcodes, copyright info, etc.
If it’s not obvious, keep your cover design consistent with the illustrations and style in your book, whether you’ve used the ones supplied, or you’ve created your own.
Once you figure out how many pages your book is, the printer can tell you how thick your spine should be.
There is definitely more inspiration for book covers out there than interior pages, so take some time and find something you like!