<human>: How do you do this: To reinforce a paper project,

OPTIONS:
- cut a piece of cardboard in equal size to the paper you want to strengthen, and glue the cardboard to the back of the paper design.
- cut a piece of cardboard in equal size to the paper you want to strengthen, and glue the cardboard to the front of the paper design.
<bot>: cut a piece of cardboard in equal size to the paper you want to strengthen, and glue the cardboard to the back of the paper design.