Here are a couple of exercises to further stretch the expressiveness of your body and voice. Do these in a group or individually. There are many other games that you can play to exercise your imaginations. You can look in the library for a book of theater games. Watering Hole Pretend to be an animal in the jungle.
Every animal moves differently.
Use your whole body, not just your arms and legs. Now, make sounds to accompany the animal's movements. Finally, move across the room to the watering hole and take a drink. On the way, get scared, get angry, make a warning sound, or stop and listen if an enemy is near. Your journey to the watering hole is like a story told, not with words, but by your body and voice.