Preheat the oven to 350 degrees F (180 C), grease an 8-inch cake pan, and line the bottom with parchment paper.
Into a mixing bowl, sift the flour and baking soda, then add the salt and stir to combine. Set aside.
Using a stand mixer or a hand mixer, beat the eggs, sugar, and oil until creamy for about 5 minutes.
Add the milk, lemon juice, vanilla extract, and lemon zest and whisk to combine.
Add the flour, baking soda, and salt and gently mix.
Then, sift the baking powder and gently combine.
Pour the batter into the cake pan and bake for about 45 to 50 minutes or until a toothpick comes out clean.
Meanwhile, make the whipped cream frosting. Using a stand mixer or a hand mixer, beat the cold whipping cream with the milk powder until you get a creamy chantilly-like consistency. Start with minimum speed and progressively increase. Then add the cold condensed milk, vanilla extract, and gently combine with a spatula's help. Set aside in the refrigerator until the cake is cold.
When the cake is cold, you can start decorating it! Add the frosting on top and decorate with flowers or anything you like!