How do i get my world to look HD

Hello!
How do i get my world to look HD!
If you could help me, that would be much appreciated.

Here’s an article you might like:
history of computer graphics cards

Shaders:
Long story short, download the kite demo, study their shaders and notice things like texture sizes, but understand impact on performance.

Lighting:
Study static vs dynamic and how that changes the way shadows are displayed

Scalable Settings:
graphics settins
Run your scene with epic settings but also view it with low settings to see what gets cut out of render pipeline.

Test cases using high res screenshot tool as well.
screenshots

A broad question with lots of answers, but this might point you in the right direction.

Thank you! This helped me!