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. Ask comprehension questions carefully. If a story is followed immediately by a barrage of comprehension questions, its artistic value is lost and storytelling suffers. I would suggest waiting at least a day to ask the usual who, what, where, when, how much, and why questions. There are other, more creative ways to use questions.