Hi,
Welcome to OSM.

The parking relation you made relation number 11553273 has an error the outer ways share segments. See https://tools.geofabrik.de/osmi/?view=areas&lon=151.13472&lat=-33.77760&zoom=18.

I suggest deleting the relation and using each simple way to tag the two parking areas.

An example of building=roof is a carport - no walls!
Please use the OSM wiki to find out what things are in OSM terms. See building=roof

I leave it to you to correct entries you have made with building=roof as appropriate.

Hi,
Welcome to OSM.

The relation crated for the Sydney Harbour Marriott Hotel (relation number 11555596) has no area.
Additionally a simple way already exists for this hotel way number 335687066.

I have deleted the relation.

Deleted landuse=industrial relation/11528658 - one member that is a straight line .. encloses nothing.

Woowookarung Regional Park??? Tagged as natural=wood? Not all trees! Why is it not tagged amenity=park?

No response.

Corrected. Both members were modified to stop shared segments.

Errors:
relation/11117033 is a bad duplication of relation/11117034. Deleted.

relation/11117034 outer ways share segments. This is an error.
See https://tools.geofabrik.de/osmi/?view=areas&lon=145.33734&lat=-7.20306&zoom=15

The relation/610910 has the name etc for the Jawbone Flora and Fauna Reserve, it should not be added to the outer ways.
Reverted.

Reverted

The tag boundary=protected area is enough.

Hi nevw!
I think the repositioning of the northern buss stop by ~ 4m has thrown it out... possibly the platform needs to be bigger?

Hi,
What do you mean "park shading"???

If you mean to change the rendering of some map to reflect what you want .. then sorry, but no. The rendering of conservation areas should not be changed by tagging them as a nature reserve.

In any case these ways for Scott Creek Conservation Park as a 'nature reserve' are duplicates of what is already in place.. so I have deleted them.

Welcome to OSM.

This change set encompasses a very large area!

First the landuse=residential areas in Adelaide. Any reason why these are separated into blocks? They don't need to be separated as far as I can see, would save some work to do the entire area as one simple way.

Melbourne...
Looks like the residential areas you added here are already included in a residential area - see way/301205988#map=14/-38.0806/145.4569

relation/11101134 has 2 outters... still an error.
https://tools.geofabrik.de/osmi/?view=areas&lon=117.13789&lat=-33.67798&zoom=15

Hi,
Relation shares outer ways..
see https://tools.geofabrik.de/osmi/?view=areas&lon=146.29612&lat=-36.36974&zoom=18

If you tag access=private then some maps can show that, and some routers will not route through it. I'd also tag surface=unpaved if appropriate as this dissuades some.

Hi,
If your only changing cliff lines why then were relations changed???

Note relation/10121936 has been deleted. This change set has been partial reverted and the relations are restored. The cliff lines should be fine.

Hi,
Welcome to OSM!

Unfortunately this change set broke the administration boundaries for King Island Council, Currie and Loorana.
I have reverted some of the data you entered to restore these admin. boundaries. I don't think that will have much effect on the data you entered.

Hi,
What is the source of the name "Pine plantation"?
Note this relation has 2 errors ... see https://tools.geofabrik.de/osmi/?view=areas&lon=143.85402&lat=-37.58770&zoom=14

Unfortunately these boundary things are hard in OSM. I get tripped up by them from time to time, why I look for them.
Don't worry about making errors, as long as your contributing good data your fine.

Still present and still mapping.

This created a multipolygon for a residential area - relation/11155419. This has an error - see https://tools.geofabrik.de/osmi/?view=areas&lon=115.59740&lat=-31.50354&zoom=15

I would simplify this into 2 independent ways - no need for a relation at all.