Eyes are marvelous tools in scenes. Eyes can narrow. They can flash. They can mist over. Eyes don't do this.
Hands speak as loudly as any words.
Be mindful of what a character's hands are doing. Characters can emphasize with them, they can threaten, they can plead. Characters interrupting and overriding each other in a scene give the narrative more punch and realism. Opposition is key to maintaining the energy of the scene. Consider two men, friends for years.