When the Priest or Deacon says, “The Mass is ended, go in peace to love and serve the Lord”, the Altar Server (cross bearer) returns to the sacristy in order to get the cross. The Altar Servers (candle bearers) remove the candles from the stand. They all line up in front of the Altar. When the Priest/Deacon leave their chairs to venerate (kiss) the Altar, all servers go to the front of the Altar and stand on each side, facing the Altar, just as you did at the beginning of Mass.
The Priest/Deacon will genuflect or bow, but you need not do so as you are, again, carrying something. Turn when the Priest and Deacon do (Candle Servers turning towards one another) and process out following the pattern used on the way in. Process out slowly to the main entrance. When you get to the back row of the Church, extinguish the candles. Slip back down the right side aisle, but be courteous to those coming out that way.
Return your alb to the closet and hang it up properly.
Hang your cross and cincture on the hooks provided.