Most, if not all, of the playgrounds you have mapped do not exist.
leisure=playground

You have duplicated many buildings here. i.e. they were already mapped.

You have duplicated many buildings here. i.e. they were already mapped.

Is there a real building located here?

I also noticed a source “streetlevel imagery”. Be aware that we are not permitted to use Google street level imagery but other sources are likely fine

Please zoom in closer to map the building shapes more accurately. When the building is selected you press Q or select the square icon to give the building right angular corners. I noticed one building with name=Norman. Please do not put personal details such as your name on osm. The name tag is meant for things that really do have a name.

This changeset was reverted in changeset/150250206
Please remap using a permitted source like a survey in person

Google does not permit this use under it’s terms and conditions

Hi, we are not permitted to use Google as a source for editing the OpenStreetMap

There are a couple more sections of Connor Street at the eastern end that need updating too
way/771415108#map=19/-28.65187/151.94024&layers=D
way/566678276#map=19/-28.65147/151.93899&layers=D

there is a problem here https://tools.geofabrik.de/osmi/?view=areas&lon=152.56501&lat=-26.94716&zoom=19
...MP outer ways conot touch
If you really want to draw as two pieces, try this way... with an outer and a part...
osm.wiki/Relation:building

osm.wiki/w/index.php?title=Relation%3Amultipolygon&uselang=en-GB

Via a web search it may be based at 6a Pirie Street which is in the building across the road from where you have placed it.

Hi, Flavory appears to be mapped on the footway next to road crossing. Can you delete it and place it the building location or stand where it really exists, thanks.

I have reverted your changeset.
You will need to re-learn the correct way to add details to the map

Large mapped wooded areas often extend extend across highways for efficiency and expediency but when mapping the edges along highways we try to map the wooded edge to the trees edge along the side of the road.

Hi, I have disconnected the wood from the roadway centreline here
changeset/149822305#map=17/-32.85279/149.78008
by convention land cover and use does not extend to the roadway centreline...
osm.wiki/Editing_Standards_and_Conventions#Areas_and_Ways_Sharing_Nodes

no response, fixed.

no response, last few fixed now.

no response, fix shape, tags, name

no response, fixed