I'll try to keep this brief, and I'm only offering my opinion because you solicited feedback.
I don't want to sound like a curmudgeon (at least not any more than I already do) but in my view (and in the view of the majority of artists I know in RL) digitally processing/filtering a photograph so that it tries to appear as though it was created using natural media rarely if ever results in the creation of anything even incidentally artistic, let alone actual 'art.'
Photography (traditional or digital) does have the potential to be art in the true sense of the word of course, and that includes photographs that have been post-processed in some fashion, either using analog/photochemical or digital techniques. But the application of such techniques doesn't make an image into 'art' if it didn't have that potential quality to begin with IMO.
I'm not an authority on this subject (or any other, truth be told) so please feel free to disregard my comments in their entirety. Having/had close friends who are professional/amateur artists all my life, me having had high-paying jobs where the word 'artist' or 'designer' appeared on my embarrassingly overpriced business cards, me having been taking photographs for even longer than the 30+ years I've been using computers with graphics... none of those things make me an artist... I'm not. I do however, know something about art and a fair bit about the tools often used to make it (natural media of various types, photography, digital tools, etc...) and given what I do know, I'm pretty comfortable saying that the act of putting a photograph into an image processing program (even if you took the photo yourself, but especially if you didn't) and selecting a tool from a Filter menu and maybe nudging a couple of sliders in the GUI... the odds that the resulting image will be "art" or even just vaguely artistic are probably infinitesimal.
This is all just my opinion, and (again) I offer it only because you asked. And with that said, you already know that I'm a great fan of your morphs and I suspect that if you were to pick up a set of actual watercolors and take the time to learn how to use them, you'd surely have it in you to create (from scratch) actual original art, just as I'm sure that if Lightfoot ever did try his hand at real Linocut, he'd have the potential to create imagery that far exceeded the commodity status of the vast majority of digital images, even original ones.