Arrange the pretzels on a cookie sheet lined with parchment paper, approximately 3 inches apart.
In a microwave safe bowl, heat the chocolate at 30 second intervals, stirring in between intervals until melted. Approximately 1 minute 30 seconds. Allow to cool slightly.
Pour the chocolate into the piping bag or storage bag. Clip the tip in preparation to drizzle onto the pretzels.
Start at the bottom working your way to the top using a back and forth motion, making the drizzle smaller and smaller as if making a triangle shape. (You want them to resemble Christmas trees.)
Quickly sprinkle the sprinkles over the chocolate before it sets and add the star using tweezers. No need to push the star in place as the chocolate will hold it once it sets.
Once all 12 are complete, allow them to completely set int the refrigerator for 5 minutes.
Remove from the refrigerator and carefully remove from the parchment paper.