sheet_width: 8.5in
sheet_height: 11in
card_width: 2.5in
card_height: 3.5in
cards:
- x: 0.5in
  y: 1in
- x: 3.0in
  y: 1in
  flip_vertical: true
- x: 3.5in
  y: 1in
  flip_horizontal: true