Draw your own hands from various angles, making sure to use the simplest possible forms (a stick figure) Rough in the overall form. To make the hand in correct proportion to the body, and ensure that the palm, fingers and thumb are all in the right places, begin by making a very rough outer sketch. Draw an imaginary line through the joints.draw and check the relative size and placement of the fingers and thumb. Next you draw the fingers, imagining cylinders formed by each section Draw the closest finger first and let the other fingers fall in behind it, drawing only the portion you can see, or lightly indicating the hidden lines to help judge proportion.
Hands are expressive in gesture, emotion and reveal action. Because of the complexity, the hands can be very hard to draw so practise practise practise the hardest thing to learn on the entire human form.
Most artists in training do wrong is they make the hands too small. Here is where the importance of head drawing comes in. If you know how to proportion the head into its proper units of measure, then you have also determined the units of measure for the hands. If you place your hand over your face, the tip of the fingers will start at the hair line, and the palm will end at the chin. This is your measuring device for the hand. "