During check-ins, recognize participants by name whenever possible. Acknowledge checkins and ALL messages. If this is not a weekly net, delegate responsibilities. You cannot do it all. If this is an emergency net, remind listeners to listen and tell them where the staffing net is.
Someone checking in to say they are listening only slows the net.
Pause, take a deep breath, and go back at it. If you make a mistake, remember this is not Brain Surgery. Nothing more will ever be asked of anyone. Keep transmissions as short as possible. Resist the tendency to ragchew or ramble.