Combine cake flour, baking powder, sugar, and salt in a large bowl.
Add cold butter and quickly mix with your hands until the mixture resembles coarse crumbs.
Finely chop almonds and mix them in.
Pour in the heavy cream and milk, and gently mix until the dough just comes together.
Flatten the dough and cut into desired sizes.
Bake in a preheated oven at 180°C (356°F) for 20–25 minutes.
Decorate the baked scones with sliced almonds and powdered sugar.