[MLE]

Pop the lights and the dark more. The more contrast you have versus the picture, the more hyper-real it will look. If there's a way to have the sharp edge of the apple stay and have the other side of the color fade to the next, you might want to think about doing that. You should also add a basic shadow at the bottom so it's not floating in midair.

Once that's done, I'm not sure if I'd even have any other critiques. You're already very accurate in your work, and it just needs a few minor tweaks to make it look real.