# Step-by-Step Guide:
01 - Pour 1/4 cup guava nectar into each champagne flute.
02 - Add 2 tablespoons elderflower liqueur to each glass.
03 - Top each flute gently with chilled champagne or sparkling wine until full.
04 - Stir gently to combine all ingredients.
05 - Garnish with edible flowers or guava slice if desired. Serve immediately.