Shooting at waterfalls has always been challenging with the wet conditions messing up the lens. Tukad Cepung was especially hard due to the thick foilage cover (which is part of its charm), making it kinda dark as well. Not to mention, the crowd with no order / queue in place.
Still, an amazing place that's relatively accessible! Recommended to visit slightly earlier for dem glorious light rays filtering through the leaves. (or just check out @piximperfect guide on how to add light rays in Photoshop)