[Rendering items and armour on mobs]

I'm trying to make a mod which adds a human mod to the game, at the moment I can render the mob itself perfectly, and I've been able to give it items and armour, however, the equipment doesn't actually render. Any help would be appreciated as I have no idea where to start

Here's my renderer script:

package com.cubix101.testmod.entity.render;

import com.cubix101.testmod.entity.EntityHuman;
import com.cubix101.testmod.util.Reference;

import net.minecraft.client.model.ModelBase;
import net.minecraft.client.model.ModelPlayer;
import net.minecraft.client.model.ModelRenderer;
import net.minecraft.client.renderer.entity.RenderLiving;
import net.minecraft.client.renderer.entity.RenderManager;
import net.minecraft.util.ResourceLocation;

import java.util.concurrent.ThreadLocalRandom;

public class RenderHuman extends RenderLiving<EntityHuman>{
	
	public static final ResourceLocation TEXTURES = new ResourceLocation(Reference.MOD_ID + ":textures/entity/steve.png");
	
	public RenderHuman(RenderManager manager) {
		super(manager, new ModelPlayer(0, false), 0.5f);
	}
	
	@Override
	protected ResourceLocation getEntityTexture(EntityHuman entity) {
		return TEXTURES;
	}
	
	@Override
	protected void applyRotations(EntityHuman entityLiving, float p_77043_2_, float rotationYaw, float partialTicks) {
		super.applyRotations(entityLiving, p_77043_2_, rotationYaw, partialTicks);
	}
}

and the script for the human itself

package com.cubix101.testmod.entity;

import net.minecraft.entity.Entity;
import net.minecraft.entity.monster.EntityPigZombie;
import net.minecraft.init.Items;
import net.minecraft.init.SoundEvents;
import net.minecraft.inventory.EntityEquipmentSlot;
import net.minecraft.item.ItemStack;
import net.minecraft.util.DamageSource;
import net.minecraft.util.SoundEvent;
import net.minecraft.world.DifficultyInstance;
import net.minecraft.world.World;

public class EntityHuman extends EntityPigZombie {

	public EntityHuman(World worldIn) {
		super(worldIn);
	}

	@Override
    protected SoundEvent getAmbientSound()
    {
        return SoundEvents.ENTITY_PLAYER_LEVELUP;
    }
	
	@Override
    protected SoundEvent getHurtSound(DamageSource damageSourceIn)
    {
        return SoundEvents.ENTITY_PLAYER_HURT;
    }
	
	@Override
    protected SoundEvent getDeathSound()
    {
        return SoundEvents.ENTITY_PLAYER_DEATH;
    }
	
	@Override
    protected void setEquipmentBasedOnDifficulty(DifficultyInstance difficulty)
    {
        this.setItemStackToSlot(EntityEquipmentSlot.MAINHAND, new ItemStack(Items.DIAMOND_SWORD));
        this.setItemStackToSlot(EntityEquipmentSlot.OFFHAND, new ItemStack(Items.SHIELD));
        this.setItemStackToSlot(EntityEquipmentSlot.HEAD, new ItemStack(Items.IRON_HELMET));
        this.setItemStackToSlot(EntityEquipmentSlot.CHEST, new ItemStack(Items.IRON_CHESTPLATE));
        this.setItemStackToSlot(EntityEquipmentSlot.LEGS, new ItemStack(Items.DIAMOND_LEGGINGS));
        this.setItemStackToSlot(EntityEquipmentSlot.FEET, new ItemStack(Items.DIAMOND_BOOTS));
    }


}