You take either one or two stiff flat hands (fingers together) and extend them outward to people or God in a motion similar to blowing kisses.
If a Deaf ministry is going to be great we need to thank God for the blessings and challenges, as well as thanking others for their help and deeds of kindness. Jesus was serious about the importance of thankfulness! We should be, too! (Remember the lepers in Matthew 11?)