Luckily, I've always had very nice eyebrows that naturally look like they've been plucked, so I didn't get them done until about 18, when my friend convinced me to try it with her. I was very pleased with it, as there was hardly any difference, but they were just slightly touched up around the edges. I haven't done it since, but would definitely not be opposed to doing it again. I just have a pretty busy and cheap lifestyle, don't trust myself to do it, am a little nervous about someone messing them up really badly, and don't like pain.
Never done my eyebrows professionally. I just pluck like literally 2 or 3 hairs from each ( started doing it at 17/18) . My eyebrows are naturally "done " but I like to put some brow pencil in the front sometimes.