Brush your brow by starting from the beginning of your brow till the middle in upward strokes. And how high the strokes should go depends upon your brow arch. So give your brow nice upward strokes that goes well with your brow arch. Make sure that you do not overdo it.
Next comb up the brow hair with the brow comb. If the brow hairs are long enough then trim them with sharp scissors.
Now as you reach the middle, brush your brow from the middle till the beginning of the arch. Make sure that the direction of the stroke is the one that makes your brows appear natural.
After reaching the beginning of the brow curve, brush the brows in the downward direction till the end.
Repeat this process on the other eye brow as well.