This is an interesting interpretation of the theme!!
I really love the creativity and how well made your game is (I didn't see any bugs) except the obvious ones haha
I can see so much potential in this game, it is not made for my taste, but I think it is perfect for people who have the patience to decorate their houses in Sims. I just lack that ability.
But the premise caught me so much I just had to comment haha
THE WAND. POLLON, ALL THE OPTIONS, ALL THIS POWER??
Also I really love the images you provided as examples, really shows off the abilities of what you can make.
The luna moth is crazy good.
edit: are you experienced with real life sand art? The game just feels so right, it's hard to explain