now this is really impressive, it's a gesture drawing in 30 seconds, and you can just see the professionalism in these lines. this person knows what they're doing and you can get to their level only with practice
Anatomy basic shapes - most people know of these simple drawing rules. But when you are having fun drawing you somehow ignore them, or maybe thats just me? Anyways, i beleive using them more consistently would improve my drawings a lot!