fun fact: art block kinda doesnt exist lol
Your eyes and your brain for art don’t always develop at the same rate, sometimes your eyes just get better at recognising art and it’s flaws faster than your brain and hands can, so you are able to recognise all the mistakes you used to do and didn’t notice before, and the opposite happens later, when you see your art and go “hot don diggity damn I draw so well holy shmoly” that’s because your brain and hands have gotten better at art due to continuous practice
A thing I do to “counter” this is that I just go back to the basics whenever I feel like my art has gotten “worse” (it actually is the exact same as before remember you are just noticing mistakes you didn’t notice earlier)
So just, draw a bunch a cubes, spheres and cylinders when you're on "art block"