When doing any type of animation, you have to keep in mind secondary action. The water should run down the top of the leaf. When it falls, the leaf should have a bit of bounce. The leaf was a lot heavier when it had the water on it.
While it is falling, the reflections and shape that it has will change some the whole way down.
What is the droplet falling into? Water or a solid object? If it is falling into water, the water will dip down then splash upwards as well as the waves it makes. If it hits a solid like ground, it will hit then burst up and out.
See if you can find slow motion video of water dropping and impacting water or ground, it should help you have a visual reference to what I mean.
Secondary action is key to keep an animation from looking stiff.
Thank you for the advice! (Even if I'm only responding 1 year later lol)
I'm going to try and remake it