Start by sifting together the flour, cocoa powder, salt, and baking soda. Give it a good mix and set it aside.

In another large bowl, stir together the sugar, water, melted butter, vanilla, and vinegar. 

Then, add the dry ingredients to the wet mixture and whisk until everything is well blended.

Place the cupcake liners in a muffin tray or ramekins.

Pour the batter into each liner until they're about two-thirds full. 

Bake the cupcakes for 15 minutes, or until a toothpick inserted in the middle comes out clean.

After that, let them cool down completely.

Whip cream with icing sugar until stiff peaks form.

The frosting must be light, smooth, and fluffy.

Use a piping nozzle and craft the frosting into a lovely crescent moon shape.

Then, to create a dreamy moonlit look, sprinkle on some silver edible glitter or pearls.