Halloween Sugar Cookies (Monsters)

For dough:

• 1 package sugar cookie dough or use homemade recipe linked in note section, refrigerated
• ¼ cup all-purpose flour

For icing:

• 4 cups powdered sugar
• 3 tablespoons meringue powder
• 8-12 tablespoons water room temperature
• Gel food coloring

For decorating:

• candy monster eyes