Colin
Make an extruded shadow in the normal way, then weld to separate the shadow
Ten select one part and create a gradient fill, save the fill to your pallette and apply to the other elements as needed.
There are a few more ways to make this more like the example, but you need a bit of time to work on the individual bits I used the ginsue knife to slice the bottom of the shadow, on the "DAVE" then solid filled to get the right light direction
Hope this helps, cant add a visual here so put it into off topic perhaps a mod can post here
Peter
Peter