Creating Blueberry Lemon Scones is simple if you follow these steps:

1. Preheat the oven: Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
2. Mix dry ingredients: In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt until combined.
3. Add butter: Cut in the chilled butter using a pastry cutter or your fingertips until the mixture resembles coarse crumbs.
4. Add blueberries and zest: Gently fold in the blueberries and lemon zest to distribute them evenly throughout the mixture.
5. Combine wet ingredients: In another bowl, whisk together the heavy cream, egg, vanilla extract, and lemon juice until well combined.
6. Mix wet and dry ingredients: Gradually add the cream mixture to the dry ingredients, stirring until just combined. Do not overmix.
7. Shape the scones: Turn the dough onto a floured surface, gently kneading it just a few times until it comes together. Pat the dough into a circle about 1-inch thick.
8. Cut the scones: Use a sharp knife or scone cutter to cut the dough into wedges or rounds, placing them on the prepared baking sheet.
9. Bake the scones: Bake in the preheated oven for 20-25 minutes, or until the tops are lightly golden.
10. Prepare the glaze: While the scones are baking, whisk together the powdered sugar, lemon juice, and lemon zest until the glaze is smooth.
11. Glaze the scones: Remove the scones from the oven and let them cool for a few minutes. Drizzle the lemon glaze over the warm scones before serving.

By following these simple steps, you will produce flavorful Blueberry Lemon Scones that are bound to impress.