Paiges Italian Salad

Name: Paige's Italian Salad
Ingredients: 1/2 cup mayonnaise; 1/4 cup sour cream; 2 tablespoons buttermilk; 1 tablespoon minced fresh dill; 2 teaspoons minced fresh oregano; 1 teaspoon paprika; 1/4 teaspoon freshly ground black pepper; Dash hot sauce; 2 heads butter lettuce, cored and leaves separated; 2 cups chopped hearts of palm; 1 cup quartered artichoke hearts; 1/4 cup jarred sliced roasted peppers, drained and chopped; 1/4 cup yellow cherry tomatoes, halved; 6 slices prosciutto; 1/4 cup shaved Parmesan