Step 1
Cream sugar and butter in a bowl with an electric mixer until creamy. Add eggs 1 1/2 teaspoons vanilla extract and almond flavoring and mix well.
Step 2
Stir flour baking powder and salt together in a second bowl. Add flour mixture to the creamed butter mixture and mix to combine. Wrap in plastic wrap and chill in the refrigerator for 3 to 4 hours or overnight.
Step 3
Preheat oven to 350 degrees F (175 degrees C). Line 2 baking sheets with parchment paper.
Step 4
Dust a work surface with 2 tablespoons confectioners' sugar and roll out dough into a 1/4-inch-thick circle. Cut out figure shapes with a gingerbread man cookie cutter and arrange cut-out cookies on prepared baking sheets.
Step 5
Bake in the preheated oven for 8 to 10 minutes. Remove from baking sheets carefully and transfer to wire racks. Cool completely about 20 minutes.
Step 6
Stir 1 cup confectioners' sugar and milk together in a small bowl until smooth. Beat in corn syrup and 1/4 teaspoon vanilla extract until icing is smooth and glossy. Add more corn syrup if icing is too thick.
Step 7
Spoon icing into a piping bag with a small plain tip. Draw a filled-out circle inside the head for the skull and a skeleton on the body including 3 horizontal lines for the ribs. Let cookies stand until icing dries completely about 2 hour best overnight.
Step 8
Use black decorating gel to draw eyes a nose and a mouth on the skull and let cookies dry again about 1 hour.