Head Mod

I made a cow head and it came out like this:http://imgur.com/gvecMxz

So i put in the cow head model and it makes it invisible!

What did i do wrong??

ModelCowHead

// Date: 11/26/2014 6:45:28 PM
// Template version 1.1
// Java generated by Techne
// Keep in mind that you still need to fill in some blanks
// - ZeuX






package com.sterango.MobHeads.models;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.model.ModelBase;
import net.minecraft.client.model.ModelRenderer;
import net.minecraft.entity.Entity;

@SideOnly(Side.CLIENT)
public class ModelCowHead extends ModelBase
{
    public ModelRenderer cowHead;

    public ModelCowHead()
    {
        this(0, 35, 64, 64);
    }

  //fields
    ModelRenderer head;
    ModelRenderer horn1;
    ModelRenderer horn2;
  
    public ModelCowHead(int par1, int par2, int par3, int par4)
    {
        this.textureWidth = par3;
        this.textureHeight = par4;
        this.cowHead = new ModelRenderer(this, par1, par2);
    
      head = new ModelRenderer(this, 0, 0);
      head.addBox(-4F, -4F, -6F, 8, 8, 6);
      head.setRotationPoint(0F, 20F, 3F);
      head.setTextureSize(64, 32);
      head.mirror = true;
      setRotation(head, 0F, 0F, 0F);
      horn1 = new ModelRenderer(this, 22, 0);
      horn1.addBox(-4F, -5F, -4F, 1, 3, 1);
      horn1.setRotationPoint(0F, 19F, 4F);
      horn1.setTextureSize(64, 32);
      horn1.mirror = true;
      setRotation(horn1, 0F, 0F, 0F);
      horn2 = new ModelRenderer(this, 22, 0);
      horn2.addBox(3F, -5F, -4F, 1, 3, 1);
      horn2.setRotationPoint(0F, 19F, 4F);
      horn2.setTextureSize(64, 32);
      horn2.mirror = true;
      setRotation(horn2, 0F, 0F, 0F);
  }
  

  
  public void render(Entity par1Entity, float par2, float par3, float par4, float par5, float par6, float par7)
  {
      this.setRotationAngles(par2, par3, par4, par5, par6, par7, par1Entity);
      this.cowHead.render(par7);
  }
  
  private void setRotation(ModelRenderer model, float x, float y, float z)
  {
    model.rotateAngleX = x;
    model.rotateAngleY = y;
    model.rotateAngleZ = z;
  }
  
  public void setRotationAngles(float par1, float par2, float par3, float par4, float par5, float par6, Entity par7Entity)
  {
      super.setRotationAngles(par1, par2, par3, par4, par5, par6, par7Entity);
      this.cowHead.rotateAngleY = par4 / (180F / (float)Math.PI);
      this.cowHead.rotateAngleX = par5 / (180F / (float)Math.PI);
  }

}

TitleEntityRenderer

package com.sterango.MobHeads;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.entity.AbstractClientPlayer;
import net.minecraft.client.model.ModelSkeletonHead;
import net.minecraft.client.renderer.tileentity.TileEntityRenderer;
import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
import net.minecraft.entity.Entity;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.ResourceLocation;

import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL12;

import com.sterango.MobHeads.models.ModelCowHead;

@SideOnly(Side.CLIENT)
public class TileEntityHeadsRenderer extends TileEntitySpecialRenderer
{
    private static final ResourceLocation field_110642_c = new ResourceLocation("textures/entity/skeleton/skeleton.png");
    private static final ResourceLocation field_110640_d = new ResourceLocation("textures/entity/skeleton/wither_skeleton.png");
    private static final ResourceLocation field_110641_e = new ResourceLocation("textures/entity/zombie/zombie.png");
    private static final ResourceLocation field_110639_f = new ResourceLocation("textures/entity/creeper/creeper.png");
    public static TileEntityHeadsRenderer skullRenderer;
    private ModelCowHead field_82396_c = new ModelCowHead(0, 0, 64, 64);
    private ModelCowHead field_82395_d = new ModelCowHead(0, 0, 64, 64);

    /**
     * Render a skull tile entity.
     */
    public void renderTileEntityHeadsAt(TileEntityHeads par1TileEntityHeads, double par2, double par4, double par6, float par8)
    {
        this.func_82393_a((float)par2, (float)par4, (float)par6, par1TileEntityHeads.getBlockMetadata() & 7, (float)(par1TileEntityHeads.func_82119_b() * 360) / 16.0F, par1TileEntityHeads.getSkullType(), par1TileEntityHeads.getExtraType());
    }

    /**
     * Associate a TileEntityRenderer with this TileEntitySpecialRenderer
     */
    public void setTileEntityRenderer(TileEntityRenderer par1TileEntityRenderer)
    {
        super.setTileEntityRenderer(par1TileEntityRenderer);
        skullRenderer = this;
    }

    public void func_82393_a(float par1, float par2, float par3, int par4, float par5, int par6, String par7Str)
    {
        ModelCowHead modelskeletonhead = this.field_82396_c;

        switch (par6)
        {
            case 0:
            default:
                this.bindTexture(field_110642_c);
                break;
            case 1:
                this.bindTexture(field_110640_d);
                break;
            case 2:
                this.bindTexture(field_110641_e);
                modelskeletonhead = this.field_82395_d;
                break;
            case 3:
                ResourceLocation resourcelocation = AbstractClientPlayer.locationStevePng;

                if (par7Str != null && par7Str.length() > 0)
                {
                    resourcelocation = AbstractClientPlayer.getLocationSkull(par7Str);
                    AbstractClientPlayer.getDownloadImageSkin(resourcelocation, par7Str);
                }

                this.bindTexture(resourcelocation);
                break;
            case 4:
                this.bindTexture(field_110639_f);
        }

        GL11.glPushMatrix();
        GL11.glDisable(GL11.GL_CULL_FACE);

        if (par4 != 1)
        {
            switch (par4)
            {
                case 2:
                    GL11.glTranslatef(par1 + 0.5F, par2 + 0.25F, par3 + 0.74F);
                    break;
                case 3:
                    GL11.glTranslatef(par1 + 0.5F, par2 + 0.25F, par3 + 0.26F);
                    par5 = 180.0F;
                    break;
                case 4:
                    GL11.glTranslatef(par1 + 0.74F, par2 + 0.25F, par3 + 0.5F);
                    par5 = 270.0F;
                    break;
                case 5:
                default:
                    GL11.glTranslatef(par1 + 0.26F, par2 + 0.25F, par3 + 0.5F);
                    par5 = 90.0F;
            }
        }
        else
        {
            GL11.glTranslatef(par1 + 0.5F, par2, par3 + 0.5F);
        }

        float f4 = 0.0625F;
        GL11.glEnable(GL12.GL_RESCALE_NORMAL);
        GL11.glScalef(-1.0F, -1.0F, 1.0F);
        GL11.glEnable(GL11.GL_ALPHA_TEST);
        modelskeletonhead.render((Entity)null, 0.0F, 0.0F, 0.0F, par5, 0.0F, f4);
        GL11.glPopMatrix();
    }

    public void renderTileEntityAt(TileEntity par1TileEntity, double par2, double par4, double par6, float par8)
    {
        this.renderTileEntityHeadsAt((TileEntityHeads)par1TileEntity, par2, par4, par6, par8);
    }
}