Taking waterfalls pictures can be a challenge. To get a clear shot requires descending and/or climbing to get to the best vantage point. High rubber boots also come in handy. To get the creamy water effect use a tripod plus a neutral density filter on your lens to slow down the shutter speed. Set the smallest aperture on your lens, the lowest ISO setting and use Shutter Priority on your camera to set your slowest shutter speed.