Most handmade cards are made by using 1/2 sheet of 8-1/2" x 11" cardstock. This makes the card end up measuring 4-1/4" x 5-1/2". (Like the size of an invitation.)
One of my clients requested bigger cards this year. Hmmmm....that is a challenge! I'm just so used to making standard-sized cards that it is difficult for me to "think bigger."
What I decided to do was to use a smaller card and just add some additional background elements to make the card bigger.