This is a preview on how I would have tried to improve
this wonderfull cloud image of Katja (venturousfeli).


The following was done:


- Using NeatImage to get rid of the noise and slightly sharpen to compensate for the filtering.

- Opening in Corel Photopaint © and apply feathered mask with 3oopx feathering on the silhouette

- Increasing contrast within that mask by 10 and darken by 5 in order to get a total black silhouette

- Cropping from the bottom to emphasize more on the sky.