Once again, there are a lot of interesting little twists in this Knight. For one thing, in his hand is a scroll, rather than a cup, and the ghost in front of him seems to emerge from the scroll. For another, his horse looks rather more demonic than I'd normally expect. Thirdly, his helmet has bat wings and a scary faceplate, though the Knight's face looks rather sad. And of course, there's the black cat looking on curiously. There is also a river running through the countryside, but I think that's true of the RWS Knight of Cups, too...
So, a Knight made sad by emotions from the past evoked by a message or journal, perhaps. Although he is driven by his emotion (the fiery horse), he is quite practical about it (pumpkins on the bridle).
To me, this card says, "Speak or act on your emotions, or you might regret it."
Certainly, I have quite a bit to say to my psychotherapist today, after all the shadow work of the last while! I don't think I posted it directly before, but I received a rejection from the second reviewer of my dissertation protocol on Tuesday, too :( At least this one was more supportive - constructive criticism, rather than just calling tarot hokum.
I am grateful to have people to talk to.