I considered possibly remving shading on the sea, or dithering it instead(jalonso's suggestion).
The main point of removing shading is to help you get everything in exactly the right shape before doing other things like shading or dithering.
Look at this:
When you simplify it, it shows that the wave shape is a bit off -- see the shape of the orange area? That looks more like a bubble than a wave. Which is okay, except you were shading it like a wave.
I think it might look better something like this (again, this only includes color rather than shading.
The other reason it might be good to omit shading is that logically, the sea should refract light -- especially because of its rainbowy properties, and if you include shading, it suggests that the picture is sufficiently detailed to include refraction -- hence it looks odd when refraction isn't included.
if you look at the top left wave, the refraction patterns might be something like that (since they flow smoothly typically)-- although those patterns were just accounting for the turbulence of the water and not actually any rendering of refraction.
Alright, I can change the placement of the drops.
Thanks, and I've been told that I should make some small, dithered clouds in the backdrop. I suck at dithering though, and I have only a little time left, so my clouds may not be perfect.
Stylistically, I think that dithering doesn't fit this artwork. It is clear and bright, but dithering tends to make things appear more (gritty? dirty? one of the two.)