Greeting Card Free Lance Artists–please answer?

When you submit designs to a greeting card company, and you also include a SASE, how do you package this all up? Any suggestions?

Greeting Card Free Lance Artists?

I have just mailed my first submission of designs to 8 different greeting card companies. I would like to know what to do if I sell one particular design and then I receive a call from another company who might also want to buy that same design. I know that this might not [...]