Things finally cooled down at work this week, and I finally got down to working out Blacaan. The following are the workings:
Two of each at top and bottom: AD, 7S, 9C, QH
Position-Card: 1-7C, 2-9S, 7-AC, 8-9D, 9-AS, 10-7D, 17-9H, 18-QC, 19-7H, 20-QS.
In case I typed that wrong, I have scanned my original:

And here’s the scanned folded instructions:


Then a video showing the unfolding progression:

BLACAAN Unfolding Procedure from Eric Hu on Vimeo.

More on this later.