For an MS Paint job, this is actually pretty good! I like the choice of colors.
If you needed to improvement, I'd keep an eye out for shadows in relation to the light source. You kinda had a little bit of that going on with the highlighted contours of StrawberryClock facing the sun, but the illusion is dropped because of the lack of shadows on the sand. Even if you just did an eye-drop tool on the sand, opened up the color pallette, and made that color SLIGHTLY darker, it would've worked.
Nicely done, voted 5