Analysis of Ausonius

Vane, quid affectas faciem mihi ponere, pictor,
  Ignotamque oculis solicitare manu?
Aeris et venti sum filia, mater inanis
  Indicii, vocemque sine mente gero.
Auribus in vestris habito penetrabilis echo;
  Si mihi vis similem pingere, pinge sonos.

Vain painter, why dost strive my face to draw
With busy hands? a goddesse eyes nere saw.
Daughter of air and wind, I do rejoyce
In empty shouts; (without a mind) a voice.
Within your ears shrill echo I rebound,
And, if you'l paint me like, then paint a sound.