New Post: Having trouble trying to replicate a ImageMagic montage command

using (MagickImageCollection images = new MagickImageCollection())
{
  // Add the first image
  MagickImage first = new MagickImage("blue.png");
  images.Add(first);

  // Add the second image
  MagickImage second = new MagickImage("yellow.png");
  images.Add(second);

  images.Add(first);
  images.Add(first);

  using (MagickImage result = images.AppendHorizontally())
  {
    // Save the result
    result.Write("out.png");
  }
}