Just out of curiosity and maybe to make a little conversation, how old is your student?
I really cannot judge the ages of some painters because there are a lot of older primitive artists out there who sort of bask in the light of Grandma Moses.
Also, not to be nit-picky but is that a painting or did your student use crayon and marking pen? Either way, it’s a good rendering and whomever did it should be encouraged to do more.