I looked out my workroom window and saw unusual cloud formations, strangely-lit, so I rushed outside.

The "straight" images weren't particularly interesting and, more to the point, failed to capture what the scene had looked like to me -- what had jumped out at me were the ways the clouds were lit, and their forms.

So, in case you haven't guessed from the image, I set to work with both Lightroom and Photoshop to see whether I could get the image to match my perception of the sky and clouds. Not quite, but close, and this is it.