I'm gonna be blunt PF. They are just like a thousand other water drop shots I've seen..... kinda boring to me.
Change your PoV. I personally like to get level with the water surface. You MUST use a tripod or other stable perch. Get some distance between your focal point and the background. I like tie-dyed backgrounds, but anything multi-colored will be a bonus IMO. I'll have the BG 2-3 feet beyond. This helps the colors melt, twist and bind. As you did, use a pencil or anything to hit your focal point. TURN AF OFF. I use a water bottle bungeed to a boom arm, but however you choose, get the vessel to drop the water in a consistent spot. Increase your DoF to grab more hits than misses. If using external lighting, bounce it or diffuse it to reduce the specular highlights.
Keep at it to find your $$$ shot.
great job! i love both. try different colors too!
I agree with kundalini a lower angle would have made them much better. I have tried this a few times and you get better every time at it!

Saw these on Flickr and they are the object of my jealousy![]()
kundalini covered some great tips there, I did the same thing after watching the same tutorial, but as kundalini mentioned, water droplets have been done to death, but its still pretty cool and a great learning experience.
Ive done this a few times myself and realised I had to raise the bar a little higher to stand out from the crowd.
As seen below, for these I had be more consistant and my advice would be to to ditch the bag and use a drinking straw, dip straw in water, place thumb over end so hold water and release whenin position and ready. You will also need a tripod and a remote release would be really handy.
Bubbles and Splashes - a set on Flickr