The whole concept does look amazing!

I'm not sure about the shadows on the symbols, however. It's rather breaking the illusion for me, as they wouldn't be there on the real thing. Or rather they might be, but in a different way - where the drawn lines are all slightly indented into the paper surface.

Can the paper colour for the sticky notes be changed easily? I know there are some sticky note pads in colours other than yellow now, so that might be interesting to explore as well - maybe the boss chamber would be more helpful on a pink/red sheet, for instance, as a GM's reminder (again if this were the real thing).

Might be worth thinking of some variants for many of the "commoner" symbols too - if it really was hand-drawn, none would be the same, after all, so the option for a few variants would be useful.

So pretty, I hardly like to mention anything!

But as you asked...

1 & 7 - should they both be "Oberman", or is 7 actually "Obeman"?

Also, should the fields maybe have some kind of edging - fences, hedges, or even ditches - to keep the pedestrian herbivores out, and maybe some paths leading to them too. Those to the north seem a little detached currently.

I might be inclined to name the bridges as well, though that's probably just me 😁.

But one corner isn't curling-up where the glue hasn't stuck properly, unlike the real things 😉!

Depending on what line thickness you're using, you may get a better result drawing a separate arrowhead polygon and placing it on your line. The automated arrowhead lines can look pretty unappealing, because sometimes the line-end extends beyond the tip of the arrow, as if it's been blunted.