Gluten-Free Funfetti Birthday Cake

Name: Gluten-Free Funfetti Birthday Cake
Cuisine: American
Ingredients: 2 1/2 cups gluten-free all-purpose flour (see note) (11.5 ounces/326 grams); 1 1/2 cups granulated sugar (10.5 ounces/ 298 grams); 3 1/2 teaspoons baking powder; 1 teaspoon salt; 1 1/4 cup milk (traditional or dairy-free); 2/3 cup vegetable oil ((4.75 ounces/134 grams)); 4 large eggs ((about 8 ounces/226 grams)); 2 teaspoons vanilla extract (pure vanilla or clear (imitation)); 1/2 teaspoon almond extract (optional); 1/3 cup colored sprinkles, plus additional for topping cake; 2 sticks butter, softened ((8 ounces; 226 grams)); 4 cups powdered sugar, sifted ((16 ounces; 454 grams)); 4 tablespoons milk, more as needed; 2 teaspoons clear vanilla extract; 1/4 teaspoon almond extract, optional