The basic elements for the Old Testament sacrifice for indivual sin are; a lamb or goat without blemish, knife for the slaughter, confession of sin, blood of the lamb, altar and the horns of the altar, the priest, and fire.
Since Jesus Christ poured out His blood on the cross for all we no longer need an animal sacrifice for our sins. His sacrifical death cleanses all who will receive Him. Because we still have a carnal nature we need to confess our sins to Him for daily cleansing.