Creating a Black Forest Cake can be simple when you follow these steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Prepare two 9-inch round cake pans by greasing and flouring them.
2. Mix Dry Ingredients: In a large bowl, sift together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.
3. Combine Wet Ingredients: In another bowl, whisk together the eggs, milk, vegetable oil, and vanilla extract until well combined.
4. Combine Mixtures: Gradually pour the wet mixture into the dry ingredients while mixing, ensuring everything is well-incorporated.
5. Add Boiling Water: Carefully stir in the boiling water, creating a runny batter. This step helps to create a moist cake.
6. Divide Batter: Pour the batter evenly between the prepared cake pans.
7. Bake: Place the pans in the preheated oven and bake for 30-35 minutes. Check for doneness by inserting a toothpick in the center; it should come out clean.
8. Cool: Remove the pans from the oven and let the cakes cool for about 10 minutes. Then, transfer the cakes to wire racks to cool completely.
9. Whip the Cream: In a mixing bowl, beat the heavy cream and powdered sugar until stiff peaks form. This will serve as the frosting for your cake.
10. Assemble the Cake: Once the cakes are completely cool, place one layer on a serving platter. Spread a layer of whipped cream on top and add some drained cherries.
11. Finalize: Place the second layer on top, then cover the entire cake with the remaining whipped cream. Decorate with chocolate shavings and top with more cherries as desired.

These steps will guide you in creating a Black Forest Cake that is not only delicious but also visually stunning.