Black & white abstract stick tapestries wood wall key ring

This is a picture my son drew last year. He is 18 years old this year. Although I draw and do various handicrafts, especially handmade bamboo and wood glasses, in fact, I have never taught my child to draw. It was not until one day he placed a black-and-white stick figure on the table (I still think that was his best creation to this day), when I came home from work and saw it, that I realized my child had a talent for drawing. At present, he is making every effort to apply for an art university in the UK. This is a creation about environmental issues. The theme consists of four groups of sketches, namely giraffes, polar bears and zebras, and elephants. They all depict scenes of mothers and children together, respectively expressing "less leaves - giraffes", "less grass - zebras", "less floating ice - polar bears", and "less water sources - elephants".