I've seen on here from several people that it's virtually impossible to add a veneer to a carved top that has drop offs in multiple directions without things like vacuum presses and the like. You can do a veneer to a single direction drop like the arm contour on a strat pretty easily, though. Just wet and bend, glue and clamp. The radius curves make it impossible to wet and bend, because you will end up with a fold somewhere. The best bet if you want to "redo" somthing like what you're talking about it to thickness plane the body down by 3/4" and put a maple cap on, then carve the drop yourself with a router, planes, or sanding.
Good luck!