krissi835, waterfall shots should be done on overcast days, either early in the day or into the evening, and in most cases a neutral density filter as well. A tripod is a must for slow shutter speed shots at any time (not just waterfalls). The last one is the best, but composition is also the key, you will find if you had a tripod, took them in low light, with an ND filter and composed the shots so we could see where the water pools at the bottom as well, your results would be much better. A polariser filter can substitute for an ND one as well.