Here are two cards that use the Heart to Heart punch. The top one uses the Love You Much stamp set and the bottom one uses Three Little Words (which you can get free during Sale-a-Bration with a qualifying order.) On the top card, I actually punched a border with the Heart to Heart punch. On the second card I'm thinking about adding a trio of hearts on the bottom right of the inside (like the ones on the front of the card). What do you think? Leave a comment with your thoughts.
Of course, you can add any sentiment you want on the inside. So, it can be a Valentine's Day card, or it can be a birthday card or anything else appropriate that you want (and you have the stamp for). Teeny Tiny Wishes is a great set for that reason. You get 24 different phrases to choose from.
If you are coming to the Change of Seasons class, let me know if you'd be interested in doing these cards as an add-on.