Until you’re good at freehanding it, use a stencil. Work with a pro to find the right stencil for your face and browbone.
Brow styles are such an interesting cultural phenomenon. Friends of mine are in Egypt right now and the brows they have been given look freakish to me. Big, black and very hard-edged. Friends in Bratislava have tiny, skinny very high brows. Also kind of weird-looking to me. For a while I was following the Iranian style and when I went out coloured my brows a fairly intense purple. Now I’m going fairly natural with the whole thing – just trimming out a few outliers on occasion and using a brow brush with a tiny bit of colour so people can see I have eyebrows.
An online friend had eyebrows tattoed on a few years back. I cautiously noted that the style might change (before she went through with it). She explained that she’d thought about it and that what she’d picked would never go out of style. Wronnnnnnnng. The brows look dated and she can’t really fix it now. She’s going to have 2012 brows forever.