A couple of suggestions. It's lovely work, but like most of your work, the images are usually centered. This can substantially reduce subject impact when there's equal amounts of open space to either side. It draws the viewers eyes from one side to the other, not allowing the eyes to rest on the subject.
A tiny catch-light in the eyes can usually add more life in a portrait. Conversely, too many catch-lights in a photographic portrait can be very distracting and the extras should be cloned over.
I am a little confused...is this a physical work of art that you photographed, or did you draw this from a blank digital canvas? Either way, I think you have a lot of talent! The background and the lady's clothing add excitement to the picture. I think if you posted this in a larger size, it would be more suitable as a desktop. Oh...and if this is a photograph of a work of yours, would you please tell us the medium you used in the narrative? And if you drew this orginally on a computer, I think many of us would like to know what software you were using.