It looks like the lookout is already mapped at way/208009693 with the formal name and includes "Mount Ainslie Lookout" as the alt_name which geocoding engines should pick up, so I've deleted the one you added as a duplicate.

already mapped in way/8016458 so I've deleted this duplicate entry.

The gardens are already mapped at way/20289807, and the building here is already mapped including that it's a visitor center, I've deleted this duplicate way.

Same thing here, already exists at relation/1198 so I've deleted the duplicate way you added.

This feature was already mapped in way/30160608, I couldn't see any differences with what's there so I've deleted the duplicated way.

Hi, we try to avoid having multiple ways with the exact same nodes sitting on top of each other. In the iD editor I don't know how you can select the different features, in JOSM you can middle mouse click to see them. In this case I deleted way/639203742 as it's the same as way/213581450

Hi, since the building already existing at way/336023262 and it looks like these are different places within the building I've made them nodes sitting in the building in https://osmcha.mapbox.com/changesets/64512163/

I don't know if you saw but the National Arboretum Canberra is tagged as covering the whole area in relation/7177807 and the building is tagged at way/218846977 unfortunately I'm not sure of a good way to tag this as the "main building"...

PS. The ACTmapi Imagery is broken in the iD editor due to changes in the service, it still works in the desktop JOSM editor though.

Hi. Very glad to see you getting involved in editing OSM. I don't want to discourage any editing, and I don't have the local knowledge here, but I still had some comments about this change.

bicycle=yes is an access restriction access=*. in this case it was saying that bicycles are permitted on this track. Does this track really only permit "mountain" bikes but forbids other kinds of bicycles?

If all kinds of bicycles are allowed it should be tagged bicycle=yes, or if bicycles are specifically directed to use this path, then bicycle=designated.

The surface tag (it's tagged as asphalt) is very helpful to routing engines, as it can keep non-mountain bikers on paved paths.

Further to this, I recommend using the mtb:scale tag to mark it as a mountain biking track mtb:scale=*

Or would that not accurately describe what's on the ground?

Looks good to me. Just keep in mind that motor_vehicle=no is already implied by highway=footway so it's not necessary. Excess tags can make it harder for editors as it increases complexity, so it's usually best to only add those implied tags in when it needs to be made clear.

Looks good to me.

maxspeed is good, but did you mean to shorten the name? https://osmlab.github.io/osm-deep-history/#/way/4375369

What's this square river inside the shopping center?

That's fine then, thanks for explaining and contributing.

All the ones I've seen have a sign that has some suburb and then the word exchange. eg. Mascot Exchange. So if you see those signs you can add that as the name and use operator=Telstra.

shop=tattoo

To tag a yoga studio you can use leisure=fitness_centre + sport=yoga

If someone wants to trace out the grass on the nature strip, I think that's okay and acceptable for OSM. Could you revert those deletions or provide other justification for the deletion like not actually present on the ground?

While I agree parts were incorrectly tagged with leisure=park, we should just fix this by changing the tag to landcover=grass or similar instead of deleting another users work completely.

Sorry .onion doesn't work for me, no DNS found. That data is copyright ACMA then, so we can't use it in OSM, which is an open licensed dataset.

If you visit the place and see the street address posted out front then you can add it from survey, but can't copy it from another copyrighted database unless certain conditions are met.