My English name is Jamie?

For your name, I suggest 捷敏 (Jie Min). 捷 implies fast and 敏 implies flexible. So its fast and flexible for Jamie. 嘉美 is also pretty nice too and more towards Jamie, but 捷敏 is more literal than 嘉美, which sound more like a direct translation. Anyway, both are good for you actually.

I like the previous poster's suggestion of 嘉美, it's very feminine and nice.

Jamie = Jie Mei (杰妹)