It's a nice painting, but only an okay likeness. To me, you've done something very common in portraits that are gridded or traced, which is that you've averaged out the features.
What makes me look like me, you look like you you, and Evangeline Lily look like Evangeline Lily, are the differences in the individuals' features, not the similarities. A good portrait is actually a very mild caricature, in that it accentuates those specifics to look more like the person than the person does. What you have here has done the opposite, nudging her features closer to those of an average face than they are in reality. It's could almost be called anti-portaiture, really.
If I had to guess at why it's so common an error in traced and gridded images, I would say it's because they remove some of the artistic judgement from the process. Someone drawing freehand has to make decisions about the proportions, and will probably focus on and slighty enlarge (consciously or subconsciously) the most notable features; someone using a grid or tracing will often presume that because the measurements accurately match the source image, it will produce a superior representation.
However, various studies have shown that given a choice between a straight photo, and one that has been manipulated to a very mild caricature (not enough to be obvious), the vast majority pick the manipulated option as the better likeness. This indicates that our memory for faces works in an almost caricature way. Ergo, a mildly caricatured portrait will seem more like the subject as it matches the image in our mind; whereas a realistically accurate, or more averaged out, portrait will seem like a bland version of the subject.