Do You Mount Extra Stamps Outside The Lines, Or ?

The first time I went outside the lines in my stamp album, it was terrifying for me, but once completed I felt very liberated. I actually enjoy and admire people's personal unique/handwritten collections. They have a personality all their own.

It is your stamp book

As all the above respondents have indicated, there's no correct way of doing things with *your* stamp album(pace Stanley Gibbons!). I have the first three Scott International albums from when I collected as a boy in the 1950s. Since my Part III has spaces for stamps only until 1952 I've used whatever blank space is available on a country's final printed page(s) for post-1952 stamps and then added quadrilled blank pages to bring each country's stamps up to about 1970. Now as a--ahem--mature collector I've limited my scope to the countries of Europe (excluding the mini-states that use their stamp programs almost exclusively as cash cows to extract money from collectors), and I've removed from Part III the album pages of countries I'm not collecting to make room for the quadrilled pages. Symmetry and even neatness have gone by the wayside, and in all three International albums I've blithefully affixed stamps for which there are no spaces in whatever blank space is available so long as it's not an outrage to chronology. I'm the only one who looks at the collection, but even if others did what they would see more expresses my proclivities as a collector than would Scott's organization of pages.