Couldn’t decide what to do but I liked how @sls141 accentuated the billowing of the cloud. Here is my take.
1. PhotoFlow
→ HL Mode (blend) → Linear Rec2020 (no clipping) → 32f
2. gmic
→ smooth (guided)
3 pnmclahe
→ enhance contrast
4. gmic
→ add contrast, brighten (curves) A → darken (gradients) → add contrast (curve) B → overlay A with B → brighten (curve) → sharpen (LoG) → resize
5. GIMP
→ heal spots
Zoom to 100% and enjoy!