Oil rig fire painting progress

Still practicing with ArtRage 2.5.

Here's a background that I think may be completed.  This is for Trilobite Boy Saves the Day, which I've previously posted about here and here. More Trilobite Boy posts here.

Click to enlarge.

Nasty oil rig fire.  Perhaps it's time for our hero to make an appearance.

Here's an up-close shot of what the clouds look like.

Click to enlarge. 

ArtRage is a painting program that attempts to mimic a variety of real art media, with the advantages that digital painting has to offer (layers, ctrl-z).  What do you think of this cloud detail?  I left it this jpeg at 95% resolution and zoomed way in.

Another thing that would be great if ArtRage could do, would be to somehow splatter ink.  I tried for that affect along the lower edge of the smoke-cloud, near the right side.  I used a tiny tube of paint and palette knife to scrape the squirted tube.  The new ArtRage can do a lot of new fancy things.  Maybe it has options.  For now, I may try a custom brush in Photoshop.

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Original artwork on 
The Flying Trilobite Copyright to Glendon Mellow
Creative Commons Licence.