Creating the delicious Orange Creamsicle Cake can be straightforward if you follow these steps:

1. Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
2. Mix the Dry Ingredients: In a medium bowl, sift together the flour, baking powder, and salt. Set aside.
3. Cream the Butter and Sugar: In a large bowl, beat the softened butter and granulated sugar together until light and fluffy.
4. Add the Eggs: Gradually add the eggs, one at a time, mixing well after each addition.
5. Incorporate Wet Ingredients: Stir in the milk, orange juice, orange zest, and vanilla extract. Mix until smooth.
6. Combine Ingredients: Gradually add the dry ingredients to the wet mixture. Stir until just combined, avoiding overmixing.
7. Pour Batter into Cake Pans: Divide the batter evenly between the prepared pans.
8. Bake: Place in the preheated oven and bake for 30-35 minutes or until a toothpick inserted into the center comes out clean.
9. Cool: Let the cakes cool in the pans for about 20 minutes, then transfer to wire racks to cool completely.
10. Prepare the Frosting: In a mixing bowl, beat the softened butter until creamy. Gradually add powdered sugar, followed by vanilla extract and heavy cream. Beat until the frosting is smooth and fluffy. Add orange juice as needed for consistency.
11. Frost the Cake: Once the cakes are completely cool, place one layer on a serving platter. Spread a layer of frosting on top and place the second layer on top. Frost the top and sides of the cake generously.
12. Garnish: Finish with orange zest on top for garnish.

Following these steps will enable you to present a delicious Orange Creamsicle Cake that is sure to impress everyone around!