I love your work and I think this is amazing but for one thing the girls eyes are a bit uneven one is slightly bigger than the other. Maybe if the face was made bigger or the eyes smaller it would look better. However, I do love this work don't get me wrong. I love your art keep at it for as long as it takes. Your definitely succeeding.
You did read the description right? a reference is generally not copied and pasted..its used for better knowledge of the subject one would be drawing. in other words; they are supposed to look similar to the reference.
V-its not plagiarism..I would explain why but I'm tired and don't really feel more defense is needed.