Yeah its cave art. It is made from ancient people back then who lived in caves. It was made from dirt or charcoal mixed with spit or animal fat. They also sprayed the paint by blowing it as to make their artwork look cool. This is vital because they were the first to create art and was famous for that. Also, for their detailed drawings on caves.
I'm an amateur at digital art, so my suggestion may not be as useful to you. I suggest using the RCA Cambio, It's 32GB and comes with Paint 3D. It's also a laptop/tablet hybrid, so it's good for other things too. I got it at the affordable price of $120 at Staples
