When supplying files for stapled booklets, these should be supplied as correctly ordered single pages rather than spreads (pairs of pages together). Our workflow software will do the rest!
Thicker booklets are susceptible to creep. This is caused by the inner pages protruding further than the outer from the outside edge due to the thickness of the booklet. To avoid this being noticeable, care should be taken to avoid having text and thin borders very close to the outer edge of pages.