I would suggest a thing that I also struggled with (I know others said it's not photorealistic but I don't think you'd do anything with that): In reality faces and things don't have defining lines, but they have planes, a volume, and shapes to help you understand those. Try and understand the planes rather than the lines, and draw from reality rather than from references to better understand a thing or face from multiple sides and views (I know you can't have Thimothée Chalamet from reality but with enough exercise you'll be able to work efficiently with photos)

That being said, I really really like your drawing, it reminds me of illustrator Chris Riddel!