I put up the various WIP images that junsei put on his blog for this image as child posts. Is there an interest in that sort of thing or should I just leave that stuff off the site?

At the very least, the final version and the unprocessed sketch should be fine. Not so much the screencap of the image editing program, but that doesn't necessarily *bother* me either. ::shrugs::

yeah, I always find that kinda stuff super interesting but it's not something I really know if it's really danbooru content.

As long as it's parented I guess it doesn't really hurt, right?

It is interesting and on-topic. Definitely in.