Re-arranging one's tarot deck after a reading is an individual choice. Some readers prefer to shuffle the cards again in order to clear the energy that was left behind in the cards after the session. Other readers prefer to re-arrange the deck in order to facilitate future readings. This could mean placing the cards in a certain order to make pulls easier, or mixing the cards in a specific way. There is no "right" or "wrong" way to do this and it's best to select the method that works best for the reader.