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.

Terraria 1.3 SuperMod Item Spriting - Pixel Art - Thorium Mod - #1 (Ice miniboss items)

Terraria: 2D RPG Pixel art perfection

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

Terraria Spriting Tutorial - Sheeting Tiles Part II (Aseprite and Paint.NET)

Some Pixel Art I Made based off of Terraria Weapons: If this was in terraria it would be called the Crystal Dagger and would be craftable with the Gladius, 17 amethyst, and a gelatinous crystal. It would do 63 damage and would provide a lunge attack every

Terraria 1.3 SuperMod Item Spriting - Pixel Art - Thorium Mod - #1 (Ice miniboss items)

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

Omori Pixel Art : r/Terraria

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

Pixel Art 101: Terraria Samurai

Terraria Pixel Art Character Fan Art Art Print for Sale by HackThoop

Pixel Art - Beginner Spriting Guide

Pixel Art - [TUTORIAL] Coloring and Shading