Follow these simple steps to create your Butterfly Cupcakes:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Line a cupcake tin with paper liners.
2. Mix Dry Ingredients: In a bowl, whisk together the flour, cocoa powder (if using), baking powder, and salt until well combined.
3. Cream Butter and Sugar: In a separate bowl, beat the softened butter and granulated sugar until light and fluffy.
4. Add Eggs and Vanilla: Add the eggs one at a time, mixing well after each addition. Then, stir in the vanilla extract.
5. Combine Ingredients: Gradually add the dry ingredients to the butter mixture, alternating with the milk. Mix until just combined and smooth.
6. Fill Cupcake Liners: Evenly distribute the batter into the lined cupcake tin, filling each liner about two-thirds full.
7. Bake: Place the tin in the preheated oven and bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
8. Cool: Remove the cupcakes from the oven and allow them to cool in the tin for 5 minutes. Then transfer them to a wire rack to cool completely.
9. Prepare Frosting: While the cupcakes cool, prepare your buttercream frosting if making it from scratch.
10. Frost the Cupcakes: Once the cupcakes are completely cool, use a piping bag or a knife to frost each cupcake generously.
11. Create Butterfly Decorations: Use edible decorations to create butterfly wings on top of the frosting. You can use chocolate pieces or specially made edible butterflies.
12. Garnish: Optionally, sprinkle edible glitter or sprinkles on top for an extra touch of magic.

These steps will guide you in creating beautiful and delicious Butterfly Cupcakes that will be the highlight of any gathering.