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The image was sourced from Unsplash, and is totally attribution free. Such is the nature of that community. If you want to give credit to the original artist I can track that down for you.

My contribution is the stylization of the image in the requested dimensions and thus creating a unique image which you will only find here on STEEMIT. I have complied with the original license requirements, and now re-release this image under (https://creativecommons.org/licenses/by-sa/4.0/legalcode)

The rules are clearly indicated in the post:

For the chosen illustration, the artist/photographer needs to be the single author and ...

To have a valid submission, you need to be the author of the photograph. Sorry.

Totally understandable, and to be honest I'm not here for the competition but rather to contribute to this project. Obviously, I've wasted my time on nuances.

Photo by Dmitry Nucky Thompson on Unsplash
License

All photos published on Unsplash can be used for free. You can use them for commercial and noncommercial purposes. You do not need to ask permission from or provide credit to the photographer or Unsplash, although it is appreciated when possible.

More precisely, Unsplash grants you an irrevocable, nonexclusive copyright license to download, copy, modify, distribute, perform, and use photos from Unsplash for free, including for commercial purposes, without permission from or attributing the photographer or Unsplash. This license does not include the right to compile photos from Unsplash to replicate a similar or competing service.