I made them all in the same colour scheme which simplifies the cutting and I can make them production line style which cuts down on the time, but not the fun, of making these.
I used the 'Owl Cards' cut set files. These come with a 4" x 4" card base, but I made mine on standard size cards to allow for the stamped sentiments and more space inside to write! The owls I kept at the original design size.
A set of green envelopes wrapped up the job!