There are many dimensions and dynamics of a drawing. It is very important to study those dynamics individually before trying to draw a whole picture. You need to give some training to your mind and hands so that they can coordinate better. In the beginning, your hands don’t draw what is in your mind or what eyes can see. It would take a lot of time, patience and practice.
Note: You might need this drawing tools for the beginners tutorial before you continue.
One of the important aspects of a drawing are the contours. Let me explain contours…there is a coffee cup in front of you. To be on safe side, make sure it is empty before this experiment 
…now close your eyes and start exploring the shape of the cup with your index finger. This gives you a feel of the shape of the cup without distracting your attention to the color or texture or material of the cup.
Draw this “feel” on the paper using a pencil while keeping your eyes closed. This is your contour drawing. Look at any object…close your eyes and start drawing on paper without losing the contact between pencil and paper. It would look like a shape made of a single thread. Essentially, it is an outline of the object under observation.
There is a little variation of blind contour drawing. Once you finish drawing a body part with eyes closed, open your eyes…adjust position of pencil on the paper…close your eyes and start drawing again. You would end up a better looking contour drawing. Following are few examples…
Blind Countour Drawing
Blind Countour Drawing Young Boy
Repeat this experiment without closing your eyes at all. This time add more details, like…form, weight, mass space and distance. This would show the gesture of the object. Here is an example…
Contour Drawing Karate Boy
After training your hands and mind with the above techniques…you are ready to draw next level…some presentable and good looking shapes. In the beginning try drawing the cartoon shapes. They are easy to draw and offer less challenges but gives you a feeling of accomplishment which is the most important part of the learning process.
Pluto
After general cartoon shapes like Pluto, try to draw the cartoon-like faces of real people. It is next level of challenge.
Politicians, Obama, Manmohan, Zardari
After a couple of months of self learning I was able to achieve the following result…
Bruce Willis Pencil Drawing
Bruce Willis Wacom Drawing
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