Well, I don't know what say in the end.  I'm not satisfied with shading, but I'm satisfied with colours, maybe for first time ever...   (good scanner good guy...  )

You can buy it as a postcard
https://www.fler.cz/zbozi/srdce-lesa-pohlednice-a6-8894047?pos=2

  used: watercolours, white gel pen,
  size: A4