abstract pencil drawing with mind-bending patterns and harsh angles

abstract pencil drawing linear doodle mindbending patterns generative art harsh angles bold black lines spiky mounds sketchfab meticulous design simple hand drawn printmaking sketch geometric creative artistic expression unique artwork intricate visual complexity expressive creativity expressionism contemporary technique process vision experimental exploration composition craftsmanship mind-bending paper next featuring dramatic diagonals pen illustrations karl kopinski showcases dynamic designs created lines generated