Human clock

I've been projecting a short I called "Human clock". I imagined an old man with a clock on his heart, it was something technologically complicated, and I just liked that image. The I started to think about the concept, you know, life and death. Finally it became a story about a man that was taking care of his son, that was very ill. He constructs a clock that lets him live forever, and he goes to show to his son. He finds his son dead, he starts to remember and finally, after thinking he takes off the clock and dies. It's not bad at all, but I don't I want to work much on that. I would preffer something more... dark, yeah, even more.

And here I show the designs I did for it: