Top-notch Wings modelling, excellent texturing (skin, cloth, pearl). It's also really ambitious and rather successful at it. Interesting concept too. On the minus side, it's a little bit too art-conscious (the tiny differences between the left and right could have been more visible) and of course the original painting is vastly superior and has a sensuality lacking here (her lower, moist lip...).
Modelling, texturing and rendering realistic human faces is always an enormous challenge, but you have done a very good job. The image is striking, with the lighting, composition and choice of colours and finishes producing an eye-catching result that you can almost touch. Considerable effort has obviously gone into the modelling process. While the textures are very good, there are a few areas at larger rendering sizes where the additional use of procedural features could have assisted the detail and realism. For example, the skin texture does, in some areas, suffer from the smooth/plastic look that we all know is so difficult to avoid. Perhaps the use of an additional selective specular/roughness (or phong/phong_size) map to control the highlights and "dull down" certain areas would have been beneficial, or maybe even a subtle slope map to introduce the effects of micro-fine skin hair at high incidence angles. These are simply suggestions to play with later - as the image stands, the texturing, modelling and lighting combine to produce a great image!
Excellent attention to detail, both in respect to the clothe and the facial expression,
I felt the lighting captured the feel of an "old master" very well. Very brave effort to
try an model a person in this manner, but a successful one I think,
bereft of the usual cliches that often appear in CG women.
There's a very strong artistical feeling to this image which makes it
appealing. The attention to the textures is superb. However, perhaps
some differences in the two figures could have been better, for example
a difference in lighting (now it looks just like half of the image has
been mirrored to the other half).