Aww wow, this is such a wonderful picture <3 I adore the colours you've chosen and how well they compliment the character. The reds bring out the colour in her cheeks, and the skin colour contrasts against the reds to make her face the main attention~
Very pretty picture. It's calm, decorative, pleasant to look at. I can't point at any mistake…maybe the color of the mask is a bit too sharp, but that's subjective I guess. I like the stylised face really much.