Your skill is apparent through this, and every piece you post. Especially with detail. Every time I look back, there is something new and pleasant to find. I love your coloring technique. It is soft, but brought out splendidly by the dual dark and bright color scheme -- And you didn't go out of your way to be creative with it, the colors are just, and I love how you added in the green accents.
A few things to keep in mind next time though: Her leg, the one closest to us, from the armor around the knee it appears to be facing forward, yet the foot below bends awkwardly to a side-view. I think this is the most noticeable mistake, the other is just me noticing and being nitpicky enough to mention: The reflection of the floor looks much too harsh. Around her boot it's fine, as that is closest to it. But the reflection of her dress should dim out far more, and most of the added details probably wouldn't even be seen. Maybe it's just me, but the reflection is quite distracting when paired with the whole drawing. It draws your eyes to it, when they should be on the lady in the piece.
Over all I absolutely adore this. I can only imagine gaining such an attention to detail. You did wonderfully!