That one is...not good. We didn't want a cadaver, we wanted a living human man. So, we try again.
We refined the prompt instructions, instead focusing on "hands opening chest". This wasn't getting to where we wanted to go, either. Still too many cadaver vibes, but in a worse way. We'll give it another go.
This is where we want to be. We refined the prompt to include "close up of torso". We could have been very specific and created a prompt more like "illustration; wall with spray paint graffitti; man standing in front of wall wearing t-shirt, close up of torso, hands opening chest, no heart", but this is what we were looking for. Three prompts, a base image in a few minutes. But we aren't finished yet. The image needs cleanup and other edits.
We used Photoshop to clean up the generated image and apply filers and adjustments. And that's the process. We start with an excerpt from the piece for inspiration, create a prompt, refine it until we get an acceptable base image, and edit/composit until we have a final product.