Way to go @ramses.ber!! Love this! this is super realistic and I can see why your grandmother was questioning you!
I painted a bunch of bubbles and water on the floor once, appearing to come out of the washing machine (and some underwear and socks too!). Painting transparent wasn't as difficult as it would seem. I think it's great that you're throwing out the challenge. I hope you get some good takers!
RE: Realistic drawing - Cooking a fried egg on paper // Funny drawing