When you deal you should never put more than one card down at a time ie no two adjacent cards should go on the same dealt hand so when you end up with your four piles each on them has been separately dealt.
When you play, the board should stay on the table with the correct polarity
You should count your cards before you start and your initial lead should be face down until you are sure it is your turn to lead
You should leave your bidding cards down until the first lead is made.
When the hand is finished it should be shuffled before it goes back into the board
Your convention card is for your opponents to look at if they wish - not for you to check what you should bid.
When you alert you must make sure both opponents see the alert card
Dummy should be just that. Although he/she can try and keep declarer from making mistakes with comments such as "having none" or indicating the hand to lead from - during play they say NOTHING.
Phew! ! ! All this and you haven't played a card yet.