CUTTING AND FOLDING
Full-sheet cards do not need to be cut. Their finished size is 5.5″ x 8.5″. Simply fold them in half and you are done.
Half-sheet cards print two-to-a-page, so they need to be cut in half.
Portrait-style cards are 4.25″ wide and 5.5″ tall. Cut the 11″ (longer) side at 5.5″ then fold.
Landscape-style cards are 5.5″ wide and 4.25″ tall. Cut the 8.5″ (shorter) side at 4.25″ then fold.
To get a nice crisp fold on your card, you can use a folding tool sold by craft stores and catalog companies, or just use your fingernail.