Outline Sketching :
This is an illustration of the Leader kamarajar and this illustration has been made through a Simple black Gel Pen.
Time Taken to Sketch : 20 minutes.
The Simple Technique used here is , First draw the Outline of the person by 2H Pencil and Later make sure that the Picture resembles and looks like the person you think. Of course , you will have the help of the Duplicate Illustration or the Photo itself. later make it dark either with the 8B  Pencil for the Darker shades or a Thick Gel black Pen.
Thinks to Remember : 
1. First look at the Sharp features that a person has got and length of the each Features.
2. Make Sure that the starting edges of the two eyes and the end (side) of the Nose are Equal
3. Always the Ears must be Equal to the Eyes.
4. Mouth / Lips should start from the end point of the Ear
These are the Basic Tips to Draw a proportionate Face and remember that the Dimensions of the Face varies with the size of the features not on the Proportions.
By following these steps you can try a good and decent Sketch of any person or even the Leader Kamarajar.