Designing multi-page documents isn't just about making things look pretty; it comes with its own unique set of tricky puzzles. The biggest one is keeping everything looking consistent from the first page to the last—think matching fonts, colors, and spacing perfectly. Then, you've got to make sure all that information, no matter how much there is, is super easy to read and follow. It's all about making sure the content flows well and that people can quickly find what they need. Plus, if it's going to be printed, you have to think about all the technical stuff like margins and binding. It's a fun challenge to make something extensive look good and work even better!