How do you keep your brows in shape?

So, if any of you follow me on Twitter you will know that I wanted to record a tutorial on how I fill in my brows but my camera broke and I didn't want my first tutorial to be filmed on my webcam.

I recently purchased the Make Up Forever Waterproof kit and I have to say the results are great! I will be doing a review post soon with a selection of pictures showing the different stages of creating the final look.

So my question is...

How do you look after your brows? Do you tweeze, wax, or thread them?

How do you fill them in?