Not everything you're trying to sign is conveyed with your hands. Body language and facial expressions can communicate just as much information as American Sign Language (ASL), as this video shows.

Originally released by John Wiley & Sons, Inc., 2012. Streaming video file encoded with permission for digital streaming by Infobase on May 09, 2018.

Using Facial Expressions with American Sign Language (ASL) (0:48); .