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

OC) some of my terraria pixel arts : r/Terraria

Pixel Art - I am a person Doing Pixelart. Can someone teach me how to make Terraria art?

Terraria Pixel Art Solar Flare Armor Fan Art Art Board Print for Sale by HackThoop

Pixel Art - [TUTORIAL] Coloring and Shading

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

Pixel Art - [TUTORIAL] Coloring and Shading

Terraria Pixel Art: How to Build and Instructions - Guide

Pixel Art - Beginner Spriting Guide

He Who Consumes Light, Terraria Fan Ideas Wiki

Terraria Pixel Art: How to Build and Instructions - Guide

Terraria Pixel Art: How to Build and Instructions - Guide

some pixel art i made of the eye of cthulhu in my art style. : r/Terraria

Simple eoc pixel-art : r/Terraria

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

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