I only have one Macro lens and it's not very good (It used to have a nasty case of Athletes lens) but I am impatient and had to try.
Its a little fuzzy so it kind of takes away from the photo.
Knowing that you took this one with a very old, supposedly second-hand (?) lens which had to undergo some serious cleaning beforehand (at first I soooo wondered what "Athlete's Lens" might be, until I understood your play of words and "Athlete's Foot" and then mould and then "Athlete's Lens" ) makes this extra interesting. Not that the subject as such were THAT super-interesting, but it is something that in real life is smaller than we see on our screens, so you went macro, all right, working with bellows even ... so - yay. Way to go!
Lens with fungal growth, that's hilarious. I think the pic is pretty cool, it looks like it was taken back in the day and it wears the worn look well.
Have you tried magic Focus on it - I would but you are not for editing!