yeah, she has two workshops- one in karachi, one in lahore. you send her the design you want and the fabric that you want, and she takes over from there and has her people make it. when its done, she parcels it to you. i wrote her a three page design document because i’m pretty anal about some things and i outlined specifically the kind of work i wanted (beading, threadwork, diamantes, no zari or other stuff like that), and the colours i wanted based off a swatch that i had, etc. i can send it to you to check out, if you want. when she saw it, she was like, this thing is so freakin’ detailed, even a blind person could make this outfit! hahahaha 
having said that, i had no idea about patterns but i wanted something similar to the picture i had sent, which she did. for my mehendi outfit, the pic wasn’t a close up so i had no idea what kaam was on it, but her people are so skilled and she herself has such great taste that when i did see it, i was blown away. i would never have thought of the kind of kaam she did and it looked gorgeous. so its pretty safe to trust her with these things.
the best way to make sure she, or anyone else for that matter, gets the right colours is to send swatches… for instance red from a pic might look different to you and different to me and different to her. if, on the other hand, you sent her a swatch of the red you want, its super easy for her to get the fabric dyed the exact same shade. essentially, i find in this process that the more detailed you are and the more groundwork you do, the less possibility there is of being surprised by the finished product- and not in a good way. in my case, the outfit turned out even more beautiful than i had envisioned in my head, which was a great feeling, but it was also completely recognisable as the outfit i had wanted-- if that makes sense?
she recently hired two of karma’s kaarigar and i think that speaks a lot about her quality. she is based out of defence so if you have any family, they can go meet her in person. my parents went and met her to check on my mehendi and wedding dresses so i know she’s a nice person too.
the only issue i had was timing- i got my outfit a month before my wedding which was a bit later than i would have liked. to solve this issue, i would tell her your wedding date is a month before it actually is.