Creating this spectacular Orange Creamsicle Cake is a smooth process if you follow these clearly laid-out steps:

1. Preheat Your Oven: Start by preheating your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
2. Mix Dry Ingredients: In a large bowl, whisk together the flour, baking powder, baking soda, and salt.
3. Cream Butter and Sugar: In another bowl, beat the softened butter and granulated sugar until light and fluffy.
4. Incorporate Eggs: Add the eggs one at a time to the butter mixture, mixing well after each addition.
5. Add Wet Ingredients: Mix in the buttermilk, orange juice, vanilla extract, and orange zest.
6. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, stirring until everything is just combined and smooth.
7. Divide Batter: Pour the batter evenly into the prepared cake pans.
8. Bake: Place in the preheated oven and bake for 35-40 minutes or until a toothpick inserted into the center comes out clean.
9. Cool the Cakes: After baking, remove the cakes and let them cool in the pans for 10 minutes. Then transfer them to wire racks to cool completely.
10. Prepare the Frosting: In a large bowl, beat together softened cream cheese and butter until creamy. Gradually add in the powdered sugar, mixing well. Finish by adding vanilla extract and orange juice until smooth.
11. Frost the Cake: Once the cakes are fully cooled, place one layer on a serving platter. Spread a layer of frosting on top, then place the second layer on top of it. Frost the top and sides of the entire cake.
12. Add Garnish: Top the cake with orange zest for an extra pop of color and flavor.

Following these steps will ensure you create a remarkable Orange Creamsicle Cake that everyone will rave about!