Great work Tim!
My only critique is with Harrison Ford.
On the reference image there is no shadow on the face, maybe a little under his right eye,
there is shadow on the shoulder from his hat.
A plain white light from above and slightly behind is good, almost a rim light.
However the orange fill light in front is wrong, try using an area light here.
Adjusting the scale and brightness as not to lose the shadow on the shoulder.
It may help to model a simple hat for this one.
Overall, very good.
