1) When you go to freeze your dough, keep it in an extra 30 minutes if you can so that it isn’t quite so sticky. The longer you refrigerate your dough, the less stickier it will be.
2) I added 3/4 t. food coloring and the cookies were extremely dark. I would use about 1 t. for a lighter red and 3/4 t. for a dark dark red.
3) I used a 1 T. cookie scoop and my cookies were bite size, if you want larger go with 1 1/2 T like the recipe calls for.
4) To make your cookies smooth on top, gently press on the top of the cookies with two fingers before you bake them.