Well as the challenge is named, I hope you are impressed.
This is Kurai the night's OC Lilandra Rose. Drawn for the challenge: Impress me
I hope this is what you were looking for, since you said she was an alchemist and her outfit is 'like Ed's, but lighter' I figured that Lilandra is a FMA OC.
Background thingy is a brush I got from Hawksmont at DeviantArt.