Did you use that do it yourself highlight wand set? and part it down the middle and do it? I think you should suck it up and go to a pro to get it fixed

My stylist does what she calls "emergency repairs" starting @ $20 and she comes to your house if you are afraid to go out in public. LOL. THEN she bitches abut you trying to do your hair yourself! haha.
Miezzi does hair, so if all else fails, you can PM her