Lifting & Scratching Out Back to White (1st Example)

I recently made a mistake in a painting, and had to strip the color black off the paper to get back to white. This is a real life example, and extreme case of lifting out paint to get back to the white of the paper.

Watch how I did it below:

NOTE: Lifting out to this extent is best done on 300 lb paper. Anything lighter and you would struggle to achieve the same outcome.