Preheat oven to 350 degrees
Grease and flour your 6" baking pans.
Prepare cake mix and bake according to instructions on package.
Let your three cakes cool on a wire rack.
Lay some parchment paper or some foil down and place a separate wire rack on top
Spray the rack with non stick cooking spray
Melt the blue candy melts according to instructions on package.
Drop the mini pretzels into the chocolate. With a fork, remove the pretzel and tap off excess chocolate.
Lay the pretzel on the sprayed wire rack.
On the blue mini pretzels, you can also sprinkle some white pareils on them to represent some little white stars.
Let pretzels cool.
Repeat with the red and white candy melts.
For this size of cake you will need 15 blue mini pretzels, and 30-35 red and white mini pretzels.
Also dip the large pretzels twists with the color of chocolate you desire. I did just red and blue. These will be for the garnishment on the top of the cake.
I had some melted chocolate left over, so I spooned the chocolate into a zip loc bag, make a small cut in the corner and squeezed some chocolate lines onto some parchment paper and made some tips and backs of arrows which I added as garnishment to the top of the cake.
Using a serrated knife, cut off the domes on two of the layers of cake.
Place one cake layer on your serving platter and top with frosting.
Repeat with second and third layers of cake.
Use remaining frosting to cover the top and sides. Apply the frosting fairly thick on the sides to help the pretzels hold.
Starting at the bottom, layer the pretzels around the sides of the cake. Gently press the pretzels into the frosting to adhere them to the cake.
Add the large, dipped pretzels onto the top of the cake and any other garnishment you would like.
As I said earlier, I made some arrow tips and backs and added those to the top.