You're first, you don't need backups this round. Here's a simple look at the picking system.
Player 1. Only needs one pick
Player 2. Needs preferred pick and a backup (2 picks)
Player 3. Needs preferred pick and 2 backups (3 picks)
Player 4. Needs preferred pick and 3 backups (4 picks)
Does that help? I was a bit confused about the system at first, too.