Thank you for your comments guys! I appreciate the feedback, it helps me make my work better!
Okay, so I'm still working on another draft of this picture, but this is what I have currently. Right now @LQ1998 is helping me to improve it too, so shoutout to him for his help.
I know the sand STILL isn't that great--I looked up several reference images of different sand textures and it's just a lot of work to make it look real. xD That, and since it's both from a distance AND in a more simplistic style, it's hard to determine how much to put in.