My apologies for being totally new to this and don’t know if this is not the right place, but one have to start somewhere. :shrug:
I would like to have create animation of sing (the kind that hangs) swaying subtly and quite randomly in the wind and make it a believable loop for 30 seconds or something that is enought to hide repeating cycle at the background (the sign is visible for a long time, but there is foreground activity also, so I think some seconds should do it).
Can this be done for example moving card in After Effects 3d space? Also other master collection (CS4) softwares or freewares are available.
Can it be done with something like particles used as a random force to move the card or something? Or do I just have to animate “random” movement by hand?
Just guessing, but if there is an easy way it is worth asking. 
Thank you in advance.