All you have to do to succeed here is communicate with your threader! Ask for Koki- she is the absolute best! You can communicate with her really easily about what shape your want your brows to be and she is such a talented artist!
Any negative reviews below clearly did not speak up and ask for what they wanted! As far as the pain, it's ripping out hairs from one of the most sensitive parts of your body, of course it hurts.
This shop actually stays open until 8pm. Make sure to get a punch card which is good at any of their locations. I love this shop and I will never go anywhere else!