Lovely shot! I love to see the sprout and the "hairy" detail of the acorn.

I also start my journey with an inverter ring on my 50mm lens! If I may ask you a question, I wonder if you are purposefully cranking up your ISO to make a texture out of a photo, or is it just a coincidence out of necessity? I find it quite amusing, as it adds more "roughness" nuance to the image. Cheers!!