Just in case you're interested in a tried-and-true cutout-cookie recipe, try this one:
Preheat oven to 325 F
1 C butter at room temp
3/4 C powdered sugar
2 C all purpose flour
Cream butter until light. Add sugar, and beat until light and fluffy. Add flour til you have a soft dough. I recommend chilling for an hour but you don't have to. Roll dough out to 1/3"-1/2" thickness (pretty thick). Cut out whatever shapes you choose. Place cookies on ungreased baking sheet. Bake for 20 minutes. Cookies will still be quite pale in color but delicately golden on bottom. Remove them from the pan and cool 'em down before you decorate.
Oh, and for that orange icing I made, just mix powdered sugar with a tiny bit of milk until you get the perfect consistency to drizzle but not so much that it falls off the cookie. Add whatever food coloring you want, or none at all. It dries pretty quick so you need to add your little sprinkles or whatever right after you get the icing on the cookie. Otherwise, your decorations will just bounce off.