[PyMOL] conformation change

Hi,
I want to generate a figure that shows clearly the conformation change 
upon ligand-binding in 3tga(unbound) and 1mtw (ligand bound).
The ligand-binding site is a small pocket in the 3tga and is bigger 
pocket in bound structure. The loops of resi 190-195 strech to allow 
ligand binds.
I want a figure that can show the conformation change of the loops of 
resi 190-195 and also the change of the pocket.
Can anyone  give me a hint?

Thanks

Bingding