I've started a small portrait of my niece's husband's father. If it works out OK then I shall attempt a larger and 'proper' portrait of him. Here's the rub, Jeff's dad is dead and there is only one inferior photograph of him available from which to paint. I think he was Chief of Police in Algeria at the time. Here it is:
As you can see there are few shadows and next to no details: folds in the cloth etc.
I'm going to cheat a little and try to copy the shadows from a photograph of His Majesty King Faisal of Saudi Arabia, who is standing in roughly the same position and wearing similar clothing:
Should be an adventure!