First, don't use warm ingredients: Ingredients like eggs, milk, and butter should be at room temperature to ensure proper incorporation and even baking. Avoid overmixing: Overmixing the batter can lead to tough and dense cupcakes. Mix until just combined to prevent excessive gluten development. Make sure you don't overfill your cupcake liners: Filling liners too full can cause cupcakes to overflow and lose their shape during baking. Fill about two-thirds full for proper rising. Don't open the oven too soon: Opening the oven door too early can cause temperature fluctuations that affect the cupcakes' rising and texture. Keep the oven closed for the first 2/3 of baking time. And finally, never frost warm cupcakes: Allow cupcakes to cool completely before frosting to prevent the frosting from melting and sliding off.