My English name

I really liked the name that you recommended, Ishika. But I wanna use my Korean name's pronounciation. My Korean name is Suhyun. When we call my name fastly, it could be heard like suni, or shuni. So, How about my name to be Shuni? It looks so chinese? Or its good for my English name? I want to use my English name in Starbucks, they call my name when drink out. But when I said my name is suhyun, absolutely they would be confused, and they will ask my name again. I wanna prevent this situation.

I really like the name that you recommended, Ishika. But I want to use my Korean name's pronunciation. My Korean name is Suhyun. If anyone says my name quickly, it sounds like suni, or Shuni. So, how would it sound if I change my name to be Shuni?  Would it sound like a Chinese name or its pretty good for being my English name? I would like to use my English name in Starbucks to order a drink. And when I tell them my name is Suhyun, they might get confused and might ask me to repeat my name again. I really want to prevent this situation.