This scene almost looks fake to me because of the size of the clouds compared to the eucalyptus and oak trees.
I tried to edit this solely with filterstorm because I’m working on a review of that app, but it crashed right after I spent a long time masking in a curves layer (so frustrating.) I ended up using trusty, easy to use Snapseed. No need to mask anything and I can still adjust specific areas.
I did use filterstorm afterwards to clean up some noise, apply a very subtle vignette, and try the tone mapping feature. That app seems pretty complex and is going to require some serious attention before I can give it a proper review.