I believe this piece is by Hokusai:
I learned that I didn't need to make erasures if I made a separate layer of white, merged the two, then removed the white matte. I also tediously filled in black where needed to increase contrast. I could do more but I got weary of it and decided it was good enough.
I have several texture layers I can use for background but settled on this one, and needed this color. I hope this is Hokusai. (If otherwise, please correct me.)