I'm still undecided how I want to organize my layouts into books... One for each girl-just of each girl, or one for each of all the layouts that have them both in it... I'm still clueless. I like to see them printed, so for now I just do single page prints in 12x12. I figure this way when I decide how to organize them, I can just slip them into a 12x12 scrapbook, and if I need more of the same lo printed, I can do that easily. I did make my mama a random book of the girls when we lived in GA, and it was an 8x8 album that she LOVED, and it's perfect size for her to carry anywhere she chooses to take it, or to just sit on her end table.
I don't think I'll ever make an actual book(I like that I can just slip them in an album and change my mind later), I'd never be able to decide on which layouts to put in it.. I don't scrap by any time line either. Maybe I would if I had a specific event or something, but that's probably it.