Move two. Fill in—or "flood"—the center on the cookie with far more icing. If you are going for an extremely-sleek appear, skinny the icing with a couple of drops of h2o. Phase 3. To fill in limited corners, utilize a toothpick to pull the icing outward. You may also use the toothpick to pop any air bubbles that sort. Phase 4. Permit the icing