Once again Mili has done a great job with the eyes, and I think has succeeded in capturing Hrithik Roshan's character. I feel the face could do with just a little more modeling - you might want to try a slightly harder pencil, maybe a HB or 2H, for areas of subtle shading. (Though drawings often lose tone when scanned).
The main area for improvement is the hair, which is always difficult. You're on the right track with it - I'm impressed with your observation of the cast shadows from the hair on the forehead. Perhaps it might help to enlarge a small area of the photo on computer or a photocopier, so you zoom right in on a section of hair, and practice drawing it larger first. That might give you a better idea of where the lights and darks should go.
Overall, Its a terrific portrait of Hrithik Roshan - your drawing is really coming along well.

