Hey there, awesome project! For a documentary that hits people’s hearts, the key is to make the visuals feel real and the sound feel like it’s right there in the room. First, capture the raw footage with a good camera that keeps a lot of dynamic range—think of it like having a wide “picture window” so the jungle details pop but still look natural. Then, when you project, aim for a brightness that’s not too harsh—something around 200–300 cd/m² for a dark room will let the colors stay vivid without blowing out the shadows. On the audio side, don’t just layer a generic soundtrack over it. Use field recordings: the rustle of leaves, the crackle of a campfire, the distant roar of a river. Those ambient sounds create a 3‑D audio field. For the voice‑overs or interviews, record them on a decent lav mic or a shotgun mic with a good pop filter so you capture clarity without hiss. When you mix, give those environmental tracks a slight reverb that matches the room size you’re projecting into—this helps the audience feel like they’re actually in the Amazon. Balance is everything: keep the dialogue crisp at about 80–85 dB, let the natural sounds float around at 60–70 dB, and sprinkle in a low‑frequency rumble for that “earthy” feeling. Don’t let the music drown the realism—if you need music, keep it subtle and use it to accentuate emotional peaks rather than dominate. And remember, the right projector screen—preferably a matte white with a gain of 1.0—will keep the colors true and prevent glare, so the viewers’ eyes stay focused on the story. Good luck, and keep that authenticity alive!