Good job! Did u use mouse or tablet? I like the creepy tail - it looks like a giant worm. And I really love the expression in her face... That look over the shoulder, that grin! Superb. Anyway, the color scheme doesn't work for me... Too inconsistent color mixed together... The violet body is maybe too saturated...

Es una foto pintada o es un dibujo pintado?
De cualquier forma es una muy buena imagen y me encantan los colores que usaste, son muy poco convencionales y jugados.
Tambien hiciste un manejo de sombra e iluminaciones muy delicado, es un precioso trabajo.
Well done!

I use a wacom graphire 2. Her skin is color violet because it mixes blue (from the sky) and red (from hell).

Es un dibujo pintado, me fijé un poco en la chica de una revista, pero eso es todo.

Thank you very much for comment.

I agree that a less saturated purple may be better for the body. The brightness of the purple sort of clashes with all the other colors in the picture - including the hair and the tail.
Something about the head seems off to me. Perhaps it's too big? Or maybe the way it is turned?
All in all, you seem to have a good start here, but perhaps work on making the colors in a picture work together....

When you see the thumbnail in monochromatic it looks great. Why not try that? I think the colors makes it look like a (poorly) colored b/w photograph.
Really love the idea and linework!
One more point; the tail seems to be growing upwards.

Aside from the colors not quite complementing one another, I have noticed in a few of your other submissions, that your anatomy of the characters you create are a bit disproportioned as above.....The placement of her head stands out at you as if it was pasted on her shoulders. Her back continues without any shadows or curves to emphasize that there is a connection.....I think if you can improve on the proportions and proper anatomy flow, you'll have "perfection".