Thanks for sharing the (Eureka?) Lemon pics. That vibrant shade of yellow is quite pleasing to the eye. Cutting it crossways like reveals the interesting radial pattern well. And the extreme white of the pith under the skin is a nice contrast to the yellow.
Now the picky part
The last photo is much sharper, at least the top 1/3.
Think the mat is absorbing a bit of lemon juice between the two wedges.
Not sure what the answer is, but the varying focus of the mat texture tends to draw my eye downward, off the subject, when I'd rather explore the textures of the lemon.
On the first photo I thought the texture of the lemon skin was a reflection on a smooth surface, then it became apparent it was textured paper.
I just had to go cut, examine and eat a lemon...I grow lemons and oranges and see lots of cut citrus, but it's certainly worthwile to take the time to appreciate the beautiful color and design dimensions.
Tip, for really tasty lemonade...make sure and squeeze plenty of the oil out of the skin into the drink, for superior flavoring!
Dave