Hello again dear shader men

I have a tree with a trunk-skin and a leafs-skin (skin1+skin2 of the model). Now I would like to be able to apply the moving-grass fx-file to the leaf-skin and in the same time I also want to apply a bumpmap-shader to the trunk.
Does anyone know, how such an action should look like? I would be infinite gratefull for a working solution!
Thanks!