Storm front sky

[inkydigit]

I'm with Oshyan, too....
I think this looks great, maybe some more smaller details and 'wispiness', and this would be awesome!!
Cheers
Jason

[Grassynoel]

I was trying a similar thing, matching a photograph and found that many individual clouds hand placed gave me a good result.
(That said I didn't spend too long on it.)
http://www.planetside.co.uk/forums/index.php/topic,21849.0.html