I'd like to post a slightly unusual formation (I think it's reasonably close to Cirrocumulus or Cirrus floccus) that might be useful in some specialised scenes (see below) - but unfortunately, in the tweaking process, somehow the .tgc has ballooned to 1.18 MB. Any suggestions?
EDIT: I must have picked up the wrong file - here is the clip file - a measly 5k! This file was developed from Matt's mackerel sky. See the thread a couple of posts above, where he also explains how to reseed (the node that's unconnected).