Hi End0fLine, thanks for responding! 

I ended up trying OSM on a whim of curiosity yesterday after exploring some Github pages.

Yes, I did forget to mark the unmarked crossways in some of these places. I'll make sure to go back and correct them. Would marking them as a point be good enough in this case, or are there extra things I should be aware of for better practice and navigation?

And yes, I'll check out the wiki from now on! I somehow missed that there was one in the first place, that's on me. Again, thanks for the immediate feedback!