An example of the horrible engraving some publishing houses get away with. This from the largest of all, Hal Leonard. Engraved with the wonderful software, SCORE™, this music is still too widely spaced and not consistent in its progression. Fancy software could not save this publication. Every major publisher through history has fit this piece on two pages. Why they let this happen, I’ll never know.
Here is a much better example, from a hand-engraved edition. They fit it on two pages with room to spare for comments!
When choosing your page breaks, always break after a rest, so the performer can turn the page during the rest, as in the example below.
ND Music Edition 