First and foremost secret to best Cookie baking is testing. If you try any new cookie recipe, alway bake a single cookie first. Note the baking time required. All ovens behave differently. Adjust the temperature if needed.
This tip is applicable to any new cookie recipe that you bake. That is bake 1 cookie first adjust and then go ahead with baking another single cookie to see result. Bake whole batch only when satisfied with results. This will save you from wasting your ingredients and help you learn quickly.