It's funny, the hardest thing to do is to make something look like it's fast, loose and improvised, and get somebody to laugh.
The poor man wishes to conceal his poverty, and the rich man his wealth: the former fears lest he be despised, the latter lest he be plundered.
If kids like a picture book, they're going to read it at least 50 times. Read anything that often, and even minor imperfections start to feel like gravel in the bed.