I was thinking something like Otakar said. I would do this in after effects.
However,
if you really want to, or just have to do it in TG (may look cool), you could simply make all your graphics in PS, and then put them in TG as billboards. Use the card object or make a 6 sided plain- like- object, and apply your graphic to that. Then you can hang them anywhere in the scene you like.
If you try the billboard way, I think your supposed to use a .png. I don't really know for sure though. ANd remember that the Board is a 2D effect. As long as your cool with it being 2D, it should work. If you want 3D, you'll need to bring in to TG 3D models of your words, or do it in post.
Nice image in the OP by the way.