|Greetings from the Critique Club!
Hi Marcel, this was a lucky little surprise to find amongst all those flowers you had to choose from :-) I too see and love the tongue-like aspect of the petal, and the tininess of the slug - this did very well considering that it's a slug and not something cute like a butterfly. The shallow dof works very well and all your settings look fine to me. Two small changes I might suggest is perhaps stopping up to f3.2 or f.4, as usually lenses aren't at their sharpest wide open, and as this was a Minimal challenge (and cropping ain't allowed) just doing more to fill the frame with the petal. The left half, though it does help draw the eye to the petal and slug, is a black void just sitting there twiddling its thumbs so it may as well be put to good use!
Overall a very good and charming image, and belated congrats on the top ten! Keep up the good work and I look forward to seeing more from you in the future :-)