Tweezers: essential! but use them in moderation. Pluck only a few hairs, to keep the naturalness of the eyebrows, while looking for symmetry. Recreate the perfect shape for your face, evaluating proportions and the harmony of features.
Spoolie: brush the eyebrows to clean them up and promote the growth of other hairs, helping the eyebrows become thicker.
Pencil: with the eyebrow-pencil, draw small strokes following the natural growth of the hair to fill them and get the desired shape.