The normal stance when shooting a compound bow is facing about 80 deg. (nearly perpendicular) from the target, with legs slightly spread and with the foot furthest from the target advanced slightly relative to the closer foot.  With a right hand bow you face to the right, with a left hand bow to the left.  An arrow is laid on the arrow rest and then nocked (put on the bow string).  Normally the cock feather or vane (the one with a different color) points away from the bow, although some arrow rests require the cock feather to be pointing down to pass through the arrow rest without touching.  The release is attached to the string above the nock (or on a nocking loop), and the bow is drawn until the letoff is experienced.  You should establish a fixed anchor point for your full draw so that the bow is drawn to the same point each time.  Also be careful not to torque the bow (twist the bow grip while drawing the bow).  To prevent bow torque you should grip the bow loosely.  You may want to get used to drawing the bow with an open hand, cradling the bow grip between the thumb and palm.  Be sure to close the hand before firing or the bow will fly out of your hand.  It is a good idea to use a wrist strap to prevent the bow from getting away.

Look through the peep, center the appropriate pin in the peep and sight the target.  This author finds it helpful to use the round front sight guard as a reference rather than centering the pin in the peep.  The eye is positioned so that the rounded sight guard is in line with the rounded side of the peep.  This is more accurate than trying to center the pin without a reference.  Be sure that the bow is drawn in the vertical plane (not tipped to one side).  Some sights have a bubble level to keep you aware of this.  Actuate the trigger on the release slowly to prevent sidewise movement when firing. 

If your sights are properly set  and you can remember these four things, you should be able to consistently put your arrows within an 8" circle at 20 yards, the minimum skill for hunting:

  from an

When When hunting from an elevated platform, you will usually be shooting from a sitting position.  Be aware that it is harder to draw a bow from the sitting position, and even harder after sitting an hour or more in the cold.  Thus you should have your draw weight adjusted so that you can quickly and smoothly draw your bow from this position.  Also, you won't be able to position your body perpendicular to your game as you would a target.  It often means shooting from an awkward position.  You should practice enough so that the above requirements become automatic.