Lots of decal setting solution...
Personally, I use white vinegar, however...
Some time ago, I used my printer to make German camo right on the paper. I then crumpled it, then uncrumpled, over and over until it was super soft, then wrapped the figure in it using white glue... Turned out ok, IMHO although I don't think it would work on highly articulated, tightly posed figures, it works fine on figures that are relatively straight-armed & legged...
I'll see if I can dig up some pictures of one.. My photos from that era are kinda disorganized...