How da hek do you do terraria pixel art I can only do regular art

I made a tool that can create insane world sized pixel arts.

Pixel Art - Tips and Tricks ( Not Pro ) ( Terraria ) 1/2

Pixel Art - [TUTORIAL] Coloring and Shading

Pixel Art - I loved playing Terraria while growing up, and I just had to add a Terraria reference to the game that I'm making - meet my version of EoW :D

Making Terraria Pixel Art Because I Can Day: 13 Shadow Scale Armor : r/ Terraria

He Who Consumes Light, Terraria Fan Ideas Wiki

Terraria 1.3 Let's Build Ep9 Pixel Art! Terraria house design tutorial

Terraria Pixel Art, people probs done this before, but Im proud of it :) : r/Terraria

Pixel Art - [TUTORIAL] Coloring and Shading

Pixel Art - [TUTORIAL] Coloring and Shading