1. **Prep the Cucumbers:** Wash and dry the English cucumber. Using a mandoline slicer or a very sharp knife, cut the cucumber into paper-thin rounds. *Pro Tip: Lay the slices out flat on a paper towel and gently pat the tops dry to remove excess moisture. This prevents soggy sandwiches!*

2. **Make the Herbed Spread:** In a medium mixing bowl, combine the softened cream cheese, mayonnaise, chopped dill, chives, lemon juice, garlic powder, salt, and pepper. Use a spatula or hand mixer to blend vigorously until the mixture is smooth, creamy, and well combined.

3. **Assemble the Sandwiches:** Lay out your slices of bread. Spread a generous, even layer of the cream cheese mixture onto one side of *every* slice of bread. (Coating both the top and bottom slices creates a waterproof barrier that keeps the bread from absorbing cucumber juice!).

4. **Layer the Cucumbers:** Arrange the dry, thin cucumber slices in slightly overlapping layers on half of the bread slices. Top with the remaining slices of bread, cream cheese side down, and press gently so the sandwich holds together.

5. **Trim and Cut:** Using a sharp serrated knife, carefully slice the crusts off all four sides of each sandwich. Cut the remaining crustless sandwiches into classic tea party shapes: either diagonally twice to make four small triangles, or straight across into three rectangular ‘fingers’.

6. **Serve:** Arrange the cucumber sandwiches beautifully on a tiered cake stand or serving platter. Garnish the tray with a few extra sprigs of fresh dill and serve immediately.