When I first seen the thumbnail,I thought the bolts were hands.They seem to placed for that concept.I'm metaball building hands so maby that's why-no modles free for bryce(bummer)But reopen your wonderfull image and add a cloud plain volum-addjust the width and try some complex factor goodies weakly adjusted-a torrade works good used the same way too-pop-in my gallery and find the pic called - Id - to maby understand better.3 differnt complex effects stacked closely-2 cloud-1 torraid.Atmospher haze and fog settings make the effect really pop.Don't forget about the sky dome color-changing it from default can pop out some cool stuff too!!Love those spirals!!