Place one heel at the perineum and then place the other one above the genital organ.
Control the sense organs.
Keep the eyes fixed on once place and look at the space between the two brows.
Siddhasana is said to give liberation and good result. The sense organs are to be controlled through control of mind. The therapeutic value of siddhasana is also considerable. It cures all diseases of the body by generating prana or life-force.