Some people argue that you have to have a keen eye to see a great picture. I tend to disagree somewhat on that. Luck, pure luck, it was when I shot this picture and I forgot to disable the flash on my camera. Since the flash unit was closed only a tiny bit bled through and onto my cat as I was testing out the low light capability of my new Sigma 30mm f/1.4 lens. Okay, I did have the keen eye to recognise the potential of the image I ended up with but I did not see the image beforehand like this. And that last bit is what most people often mean by having to have a keen eye.
Luck… just embrace it.