Buddhist Postures
Standing: Some depictions of the Buddha - usually the historical Buddha or Amitabha - show him standing upright. In such instances, the posture is often accompanied by the fearlessness gesture (right hand raised at the elbow with palm facing outwards) and the giving gesture (left hand dangling downwards with palm facing outwards).
Walking: Some depictions of the Buddha in the lands of Southern Buddhism (such as Thailand, Vietnam) show the Buddha walking. One foot is firmly planted on the ground, the other is raised slightly. This posture is often accompanied by the fearlessness gesture (the right arm raised at the elbow with palm facing outwards) and the left arm hanging down.
Sitting: In Buddhist art, architecture and sculpture, Buddhas and Bodhisattvas are often depicted in a seated position. One of the most frequent is the lotus position which consists of the legs crossed with feel resting on the opposite thigh and with soles upwards.
Less frequently, the Buddha is depicted sitting on a throne with his legs hanging down to the ground or with feet resting on a small footstool. Another sitting posture has one leg in the lotus position and the other handing down or sometimes folded upright with foot flat on the base (on a throne for example).
Occasionally, the Buddha is depicted with his left leg hanging to the ground with his right foot folded over it horizontally or the legs are crossed at the ankles.
Kneeling: In Buddhist art, the devotional posture of kneeling tends to be restricted to saints and other holy beings surrounding a central Buddha or Bodhisattva. Sometimes this posture is accompanied by the prayer gesture.
Lying down: The lying down posture is found in Buddhist art, sculpture and architecture. It refers to the Buddha’s final passing into nirvana, known as his parinirvana. The Buddha is depicted lying on the right side, his head supported by his right hand and his left arm resting along the left side of the body.
Embracing: In the northern tradition of Buddhism, particularly in Vajrayana Buddhism, Buddhas and Bodhisattvas are sometimes seen in sexual embrace with a female consort. The male figure is usually seated whilst the female figure embraces him, wrapping her legs around his waist.
This ostensibly sexual embrace symbolizes the union of compassion (the male side) and wisdom (the female side).
Source: ww.buddhism.abt.com