Combine first six ingredients.
Slowly add in the butter, sour cream, egg, vanilla and green food coloring.
Mix well.
Cover and refrigerate overnight.
Remove from fridge and let sit 1 hr.
Preheat oven to 350 degrees
Split dough in half.
Knead dough until pliable and easy to break pieces off to work with.
Break off 2 inch balls and roll between hands to make a long finger shape.
Add knots where needed and indent where the "nail" will go with your pinky.
Using a knife, slice three times just under where the nail will go and in the middle of the cookie.
Place on a silicone mat lined baking sheet.
Bake at 350° for 9-11 minutes or until the bottom is golden brown.
Meanwhile, "paint" the almond nails using red food coloring or red koolaide mixed just slightly with water.
Once removed from the oven, use the frosting as an adhesive and add a small dot to the cookie and lay almond "nail" on top.
Enjoy warm or cool.