Eye contact is of the utmost importance as it not only holds the listener's attention and involves the listener in the story, but it checks understanding and gives instant feedback. Help with your hands and body. The hands also create. Facial expressions and movement are also vital aids. Use props sparingly.
Some storytellers are strongly against the use of any objects, puppets, costumes, bells, etc.
They consider them a clever showman's device and an unnecessary distraction. I don't feel so strongly and suggest that you try them out and see the effect. Pay attention to the physical setting. Some rooms can kill a good story. You need a quiet, well-lit, acoustically acceptable, comfortable space.