What most naturally follows?

How to make paper dividers
Select paper that is strong and colorful.
Colored printer paper is ideal, as are thin colored card sheets (color helps you to quickly locate the divisions in your binder, against the white paper inserts). You could also use notebook paper, but it is probably best strengthened if you're going to use it as a divider page (see the following step).
The paper size must be the same as or larger than the binder or notebook. If it's larger, measure and cut to size.