1. Begin by preparing your ingredients. Measure out 1 cup of vodka and pour it into a mixing bowl.

2. Add 1 cup of fresh orange juice to the bowl with the vodka. Ensure the juices are well combined.

3. In a separate bowl, combine 1/2 cup of heavy cream, 1/4 cup of simple syrup, 1 teaspoon of vanilla extract, and the zest of 1 orange. Whisk these ingredients together until the mixture is smooth and slightly thickened.

4. Take a glass and fill it halfway with ice cubes. Pour the vodka and orange juice mixture over the ice until the glass is about two-thirds full.

5. Carefully spoon the creamy mixture on top of the vodka and orange juice layer. This will create a beautiful swirl effect as the two mixtures combine slowly.

6. For an added touch, gently stir the layers with a spoon or a straw to create a marbled effect, being careful not to mix them completely.

7. Garnish your drink with a slice of orange on the rim of the glass for a fresh and vibrant presentation.

8. Serve immediately and enjoy the refreshing taste of your Vodka Orange Creamsicle Swirls.