Here's the heart from the card in question...
First, I just punched two holes through the papers and poked the ribbon through from the back to the front...
Here's the back view...
Then, I just put the other end of the ribbon through the other hole in the back...
Then I glued the first ribbon end down to the front of the paper...
Then, I trimmed the other end of the ribbon and glued it down, too...
And it's as simple as that! As you can see, the heart just looks a little different depending on the spacing of your holes, and the width and the heaviness of the ribbon you're using.
Hopefully someone will find this helpful. Thanks for looking!:)
-Laura