There are many techniques and ways to draw a dragon such as the cartoon style or the Chinese style, which may take some time and lots of practice before you can master the technique. If you are a beginner, however, learn first to draw a simple freehand dragon. Follow the detailed step-by-step instructions given below.
Getting started. On a sheet of drawing paper, draw a curvy line resembling the top half of a duck or swan. At the lowest point where the curved line dips, draw a circle and another one towards the end of the line which will eventually form into the dragon's tail.
The dragon's head. At the starting point of the curvy line drawn in step one, start a line in the shape of a horn and continue drawing the line to curve into a shape of the dragon's mouth. The eye should be drawn in the shape of a longish leaf below the top line of the head. Where the line curves downwards to form the mouth, draw another line to give the appearance of jaws and add a few small triangles shaped like teeth.
The body and tail. Starting from the other end of the horn, draw two more duck shaped curvy lines. The first line should end at the top of the second circle drawn in step one and the second curvy line should touch the bottom of the same circle. This will give you the basic body frame of the dragon. Continue pulling these two lines beyond the circle, but taper them in such a way that they form the tail.
Drawing the legs. Using the two circles as a reference, draw curvy lines resembling a dragon's legs and shape them into paws which end in sharp talons. Remember, there will be a total of four legs, two in the front and two towards the back of the dragon.
Drawing the wings. Draw a few slanting long lines from the top of the horn and connect them at the end (towards the tail) with lines to look like an accordion flap. These will form the wings of the dragon.
Finishing. Cover the body, legs, head and neck of the dragon with scales to make it look realistic, with spikes around the frame (use a picture of the dragon to help you get the idea). You're done!
Practice the above steps until you are comfortable with the whole drawing process. Remember to erase all the reference lines and circles you drew in the beginning to guide you through the process. Clean up the drawing using shading and provide a scaly effect. Graduate to using color once you are more experienced.