I had botox 3 weeks ago to treat the 2 lines between my brows. I have since been left with uneven eyebrows one raising higher than the other giving a Spock like appearance. I went back for a top over a week ago and expressed my concerns so another injection was put in my lateral brow area. However my brows are still uneven and not improved. Can I go back again and if so, where shall I ask the injection to be placed? Also can I avoid this happening next time?