you can use a brow pencil which i use but dont be encourage to start thinking the shape you make is your own natural shape and that what you have is already enough.
also another trick, use two mirrors. You will be amazed what your brow looks like when inverter horizonatally. This will give you a better perspective.
and yes you have to keep yours like that and trust me people dont mind. I mean if someone is so vain and shallow that they are going to snicker at someone just because you have unruly brows then their opinion dont mean much then.