In medium bowl, stir together flour, baking powder and salt. Set aside.

In large bowl with mixer, cream butter and sugar together until creamy.  Add in eggs and vanilla and mix until slushy.  Gradually add flour mixture and mix-ins to butter mixture and blend just until combined into a soft dough.

Shape dough into 3/4" size balls and place slightly apart on ungreased baking sheets.  Flatten the balls so you have a flat top.

Bake in a 350° oven for 10 to 12 minutes or until edges begin to brown.  Transfer to wire racks to let cool completely before decorating.

While cookies are cooling, make icing.  Mix powdered sugar and orange juice together in a heavy zipper plastic bag.  Massage mixture with your hands until it is smooth.  Dribble in more orange juice as necessary. Cut off a tiny piece from the corner and squeeze the icing decoratively onto the cookies.  Let the cookies sit until icing is dry and the cookies can be stacked between sheets of wax or parchment paper for storage.   Enjoy with a glass of milk!