public void createCollage()
  {
    Picture flag = new Picture("American flag.jpg");
    Picture huntington = new Picture("thomas.jpg");
    Picture sehome = new Picture ("sehome.jpg");

    Picture redSehome = new Picture(sehome);
    redSehome.onlyRed();
    Picture blueSehome = new Picture(sehome);
    blueSehome.onlyBlue();
    Picture greenSehome = new Picture(sehome);
    greenSehome.onlyGreen();

    this.copy(huntington,0,0);
    this.copy(blueSehome,350,0);
    this.copy(greenSehome,170,0);

    this.copy(redSehome,0,0);
    this.copy(flag,275,200);
    this.mirrorVertical();
    this.write("collage.jpg");
  }