A lot of people ask about how to arrange your layouts to be aesthetically pleasing. The questions are about color palettes, photo cropping, mats, and embellishments. There are no simple answers, nor are there any correct answers. There are a few principles of design that usually work well, but with this many questions put forth that's why there are so many scrapbooking books and magazines out there - and why they are so popular. It's a lot of fun to leaf through them and admire the designer's take on this subject. For people looking for a little help - there are layout templates. EK Success has "Plan-a-Page" layout templates, that give you a lot of choices of arrangement, based on how you hold the template (you can rotate it to get a new look). There are suggestions on where to put the journaling and the mats, too.
Paperbilities has a layout template collection, as well. These are used in the same manner as the "Plan-a-Page".
Then Chatterbox has "Journaling Genie" templates for lining up and shaping your journaling blocks. It's a handy tool to get your lines drawn to keep your handwriting on the straight and narrow - or circular path - based on the template!