I drew this in colored pencil over the course of a few weeks. It was mainly created to cover space on my own blank white walls. If you like it, I hope it will fill up some sad space for you, too.
These are some photos I took documenting my progress in creating this piece. As you can see, at first I forgot to research what lungs look like (someone told me they looked like livers).
When I caught a cold and was having trouble breathing, this image came to me. I designed it as a poster to give life to sad walls.