start lighter - Sand for blondes can also be used by most brunettes for a more subtle daytime look and is also great if it is your first time using brow pencil
with light pressure, use a feathering technique in the opposite direction of the hair growth (going against the grain helps to target the skin, instead of coating & matting down the hair) to fill in where the hairs are not as plentiful
to create a more defined or dramatic effect, go about your application in layers, using the feathering technique
when checking out your pencil enhanced brows, step away from the mirror to look at your brows as part of your whole face to achieve the right combination for you