The original T1 Hommlet mapper was almost certainly David C Sutherland III (1949-2005) as the credits in the original module were "Art & Maps: Dave Trampier & Dave Sutherland". David A Trampier (1954-2014), a somewhat tragic figure from the Wikipedia biography, seems to have mostly prepared lots of artwork - such as the original "orange" cover for T1, and the cover for the 1978 "AD&D Player's Handbook", for instance, often prominently signing his work "DAT". Amongst numerous other items, David Sutherland though famously produced the isometric maps of the eponymous castle for the original Ravenloft module (1983), which seems a good fit for the isometric Welcome Wench plans to my eye at least!

Nice little shack!

It looks as if you may have a corner-join issue (SW corner). That could be because you started drawing the walls at the corner. If so, you might instead try starting partway along one of the flat sides, as if you start at a corner and then add a break in the wall - such as for the door - you can end up with this odd-looking effect otherwise.

And maybe add a window?

Looking at the symbol and terrain use here, I think these could be used to create an illusory city too, or a literal ghost town, perhaps with some additional colour overlay effects, and perhaps some transparency about the symbols (less sure about the latter point, however). Or indeed a city of glass.

Excellent! And now without the canvas roof? 😁 And then with the anti-aircraft guns mounted on the rear. And...

You know Forum folks - we ALWAYS want more symbols!

And now released into the wild! Wrap up warm and go exploring folks!⛷️❄️☃️