Great concept, but the nostrils are sloppy and offset. The one on the left goes up into the cheek, and the one on the right is noticeably thinner and is placed too high compared to the one on the left.

They are also obviously painted on, appearing solid black, instead of trying to match the darker tones of the rest of the image.

Better, but now they are a bit too small and "slit like," and the addition of the weird cracked stone texture is very distracting - especially the heavy diagonal mark above the lip. It doesn't really look like a statue, nor like "Tom Riddle's sister," it looks like a facial mask treatment gone bad...