To begin, draw an S, for snake, or dragon. Whatever.
Next, we'll draw a more different S.
Close it up real good at the top, for his head.
Then, using consummate V's, give him teeth, spinies, and angry eyebrows.
Now you can add smoke, or fire, or wings, you know, if he's a wing-a-ling dragon.
Now let's put one of those beefy arms on the back of him for good measure.
That looks really good, coming out of his neck there.