You can always conceal the missing bends and corners with trees next time, of course, but this does look more natural now.

One option for having a more "realistically" vegetated treehouse settlement would be to layer the canopy cover, and use map toggles to hide various of the layers as you descend through - including to show the forest floor as you have done this time, ultimately. This needn't be too complex, as a simple upper level of tree cover might be the only additional layer you'd need. That could hide everything, as it would be with a solid forest cover. Then toggle that top layer off to reveal the main houses and walkways (much as you have here), still with the missing walkway bends "hidden" by the next level down of the canopy trees.

In terms of those bends, I haven't tried, but at this kind of overall map scale, you might get away with artificially shortening some of the walkway segments by using separate X and Y scaling for the symbols, and using each short symbol as one little part of an arc. You would have to overlap the part of the inner areas on the curves too, so again an experiment to try would be advisable first. It may not work, of course, and probably wouldn't once zoomed-in even a little, but it could be worth trying.

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 😉!