I'm bothered by the Bump node in Materials.
i'm trying to do a earth render and i want to recreate the cyclone's volume and have to find a good way to soften the bump effect.

on the left is the effect i'm trying to achieve.

[![what i'm trying to achieve[1]][1]
[![Bump effect][2]][2]


And this is what my render look like now.
[![horizon view][3]][3]
[![enter image description here][4]][4]

When i tweak the bump node to make it look smooth, it looks kinda flat, not fluffy enough.
But otherwise the shadow is too harsh and the whole thing just doesn't look like a cloud.
i also tried creating a normal map, didn't work out too well....

Any recommendation on what other methods should I try or what else can I do to resolve this? Big thanks to any advice!


[![normal map][5]][5]


  [1]: https://i.sstatic.net/8RNrq.png
  [2]: https://i.sstatic.net/HevZw.png
  [3]: https://i.sstatic.net/OuOkq.jpg
  [4]: https://i.sstatic.net/kQDAx.jpg
  [5]: https://i.sstatic.net/O3x3R.png