Based on Laure's feedback, I worked on my original leaf a bit. I couldn't do a lot with it, but I think I made it a little bit better. I'm not sure why we don't see these things in our own work, but as soon as I read Laure's comments, I knew she was right. That is one of the values of getting honest feedback from someone who knows what they're doing.
I'd been wanting to do some more leaves, so I did a couple more today.
The Bradford Pear leaf isn't quite as bright IRL - but almost. This is a scan, and I also took a photo outside in natural light - didn't make much difference, so I went with the scan.