looks like a dress from AlexandermcQueens spring/summer 2012, the drawing is nice but it's not your design, even the colors are similar, you can still be inspired by Peonies just find a way to do them differently .
I'm ashamed to say that but i don't know designs from that collection- so unfortunately there is no reason for your blames. It's true that i get inspired by designers- but i have enough pride not to copy someone's work. At least i'm happy that my work does remind of such a great designer