this image would have been wonderful without the cloud effects in the air...

Too dark. Your colors are inconsistent with the sepia effect. The left hand of the witch is too green for the rest of the figure. The render clouds over the background just makes the image "noisy" looking and does not add to the mood, and the castle in the distant background steals the focus from your witch, and looks very cut and paste due to the sharp focus amongst all those rendered clouds and the color intensity. Colors lose saturation with distance.

This is an interesting concept, but there is too much happening without sufficient focus and cohesion, especially color-wise.

the green outside light on the lady is not usefull...

Folds on dress don't match angles of the steps. Ghostly figure in background detracts from overall image.