I'm using \hl{} from soul package to highlight some words in my document. However, I'd like a "realistic" highlighting, simulating the result of a "manual" note: a not-so-regular rectangle with "waves" here and there.
I think a long time ago I saw something like that here in StackExchange but I could't find it.
Edit
Yes, this is a duplicate of Color Text Highlighting in LaTeX. I can't understand all the code but it is what I need. Just one more thing: is there a way to recreate the darker spot corresponding to the point where the highlighter is removed from the paper, like in the (exaggerated) image?
I don't really need it but it would make the document look more hand-drawn.

soulpos. – Javier Bezos Sep 17 '19 at 15:37