Freeze your margarita glasses for at least 15 minutes before serving to keep the cocktail perfectly cold longer and enhance the bright blue color's visual impact.

Always use freshly squeezed lime juice rather than bottled—the difference in brightness and tartness is dramatic and essential for balancing the sweetness of blue curaçao and simple syrup.

Use a 1:1 ratio of tequila to blue curaçao with slightly less simple syrup than lime juice to prevent over-sweetness—this maintains the 'slightly bitter' complexity mentioned in the recipe.

Rub lime juice on the rim first, then apply coarse sea salt mixed with a pinch of sugar to create a subtle sweetness that complements the blue curaçao without overpowering it.

Shake vigorously with ice for at least 10-15 seconds to properly chill and slightly dilute the cocktail, which opens up the flavors and prevents it from tasting too syrupy.