How do I make a custom entity texure

Use Blockbench for custom models and textures and then import them into MCreator

On the left, there is a "Resources" button. Click on that.

How to import textures:

Step 1: Select "Import Textures"

Step 2: Choose the type of texture you want to import (in this case, mob texture. (the bottom one))

Step 3: Select your texture

How to import 3D models:

Step 1: Select "3D models and texture mappings"

Step 2: Click Import JAVA, Import JSON, or Import OBJ+MTL, depending on what type of model it is. (in this case, it is a JAVA file, (entities are JAVA files, and blocks are JSON. But in some rare cases, you might want to choose OBJ+MTL for blocks))

Step 3: Select your model and choose the animations (only groups can be animated, and make sure that your pivot points are in the correct spots (In Blockbench))