I remember seeing this work before at a curie upvoted post? Looks cool.

I believe art is a language by itself and it doesn't need to be elaborated/explained/justified, especially not by the artist himself.

We encourage artist to explain their process for different reasons. Most of the time, it's a screening method to uncover a plagiarist pretending to be one. This platform has witnessed several serial plagiarists so we added those to the guidelines. If the author is indeed the artist, explaining their work will not be a problem unless it's not really their work to begin with.

As far as I understand the functionality of this, I can only post one image. Even if I edit my post on Steemit and add more images they don't show up here, I only see text fragments (see below).

The original web design was to make the platform look like a gallery so limiting it only to one image per submission made sense. But after some runs on the real world, it was clear that process shots helped establish credibility. We don't mandate people to produce process shots but it saves us the time to bother asking for some if new faces in the community started posting questionable work. The last thing we want is to reward fakers.

The platform renewal will be coming this December and a new interface will be up. I personally haven't seen the new functional options but it was already suggested to have the option to include more photos for submission. For now, I just edit my process shots on the steemit frontend and then copy paste the texts/codes.