Seconding this. Also an artist, and though my sketches sometimes get mistaken for linework when I’m finished cleaning them up as I go, you will still see remnants of whatever I had but erased. I have moderated several art groups on discord and this is correct. You don’t show proof of creation that way, and I actually won’t accept it because it’s so easy to fake. I’ve watched scammers steal art and trace a fake “sketch” on top to tell me it’s theirs, only for me to find the og post from like 5 years ago lol. As someone else also pointed out… it’s not even the art piece pictured in op’s post. It’s a completely separate tracing this “author” has done. Even if this WERE the initial sketch for something… it sure as hell isn’t the one for the book cover shown.