Someone show me how

I want to make a sketch of my mamaji`s son aditya in this photo. Can someone please show me how I could do that? Because I have tried my best but it turned out to be very very ugly! You see, the photo itself wasnt very clear because the flash wiped out a little of his expression and then It was scanned badly again so that his face is just filled with bright light...can anyone tell me how I can make a portrait of his face in the same expression and not make it look like the overexposed photograph?

...i really hope u understood what I want...

Filed in: sketches