I'm not sure whether I have a muse or not, the idea has always seemed a bit hokey to me.
If I did have one I imagine she would have a silver disc face framed by a dark shawl. Her eyes are misty green hollows, soft with having seen too much and dreamt too long. She has slender pointed nails and a slipper lip (rounded and slightly fuzzy).
She dwells in a forest among the roots of a Boab tree and she gathers wild flowers and lives on nuts and berries. Her hair is long, soft, wild, and white. She is part dryad.
She is very vague and communicates in half formed words and snatches of dreams.
Most of the time she seems very far away, but sometimes she is very clear and forceful.
Sometimes she has the voice of the wind sighing through the leaves. Sometimes she has the voice of branches snapping and crackling in flames.