Somehow i can't help to think that i saw this women on another picture? wasn't she drawn by Ra^Nooon for Stars-Wonders of the world?

Yes, she was drawn by Ra - for either that demo you mention or Arte by Sanity (amiga). However, I once saw the inspiration for those pieces, so this may be another case of two graphicians working from the same inspirational image.

Source image found:
http://www.carmenes.org/2010/06/30/carlos-nine/

So amazing ! You're dithering, use of colors in st low resolution is really brilliant