You should correct this error.

Hi,

Multipolygon relations cannot have outer segments share locations...
See https://tools.geofabrik.de/osmi/?view=areas&lon=145.13256&lat=-37.91325&zoom=17

Source for these wetlands and water bodies in this area would be far better from the LPI Base Map.

Phillip Island Nature Park boundary restored to position.

The Churchill Mud Bank where it uses Phillip Island Nature Park boundary is changed! The park boundary does not conform to natural features... please do not move the park boundary to conform to this or other natural feature.
Enter natural features using their own boundaries.

Not other things you have added may have suffered the same fate.

What is way/790238580???

Mangroves?
Reef?
OR
Saltmarsh?

It cannot be all 3.

Use the OSM wiki

See wetland=mangrove

way/790661598 for a beach has 0 width.

Deleted.

Changes to ways 184393276 and 374898226 by this changeset have been reverted.

There will be further action to restore boundaries altered by you. Do not make further unwanted work - leave already entered boundaries in place and unaltered. If they are linked to some natural feature then separate the natural feature from them.

Note - the coastline is the high water mark, not the low water mark.

Way: 184393276 is NOT a natural feature but an administration boundary. Stop changing it to suit natural features.

Way: 374898226 is NOT a natural feature but a park boundary ... stop changing it to suit natural features .. leave the park boundary where it should be.

A path would normally connect to the road.

On Relation: 11039156 there is the tag reef=mud. But there is no tag natural=reef but rather natural=wetland. Which is it a wetland or a reef? There are similar conflicts on some of your other entries.

I think he reads them, so future changes may not have similar difficulties.

He never responds.

1) I do not understand the changeset comment "Amendments Requested by Osm". Link to this request?

2) "Sand at Low Tide" appears to be a DESCRIPTION!
I have removed this one and others.
Please do not add any more other than real names in the name tag. Descriptions should go in the description tag.

The map should show what you are trying to describe. Features such as buildings are not named 'building', nor tree areas as 'tree' .. the render can show these without overloading the resultant map with text describing things.

3) You should respond to these comments! You can do so here. This confirms you have revived the message and you may then enter any discussion you want.

This has harmed the French Island National Park boundary. This and your later changesets have made a bit of a mess of it. I'll have to come back to it.

Please don't change things that are already in OSM unless that is what you intend.

Hi,
Same comments on using the name tag for a description .. don't do it.

Hi,
Problem with way/790661598, a section of it has 0 width. See https://tools.geofabrik.de/osmi/?view=areas&lon=145.30123&lat=-38.45372&zoom=16

The name tag should only be used for names, not descriptions. Please review 'Mud at Low Tide' and 'Sand at Low Tide' and possibly change the tag 'name' to 'description'.

Hi,
Welcome to OSM.

An issue with Way: 795123700
Tags:
"addr:suburb"="Ivanhoe East"
"addr:housenumber"="154"
"building"="house"

There are 2 building here and you have connected them in one way such that they cross over with no 'space'. See https://tools.geofabrik.de/osmi/?view=areas&lon=145.05066&lat=-37.77388&zoom=18

It think the smaller of the two is a garage as a driveway leads to it, so it is not a house.

No 47 has the same problem. Looks like ther are a few of them...
Use https://tools.geofabrik.de/osmi/?view=areas&lon=152.95697&lat=-26.63113&zoom=18 and pan around to spot them.
I'll leave them for you to fix, I'd just make them a simple way around the outside and not bother with the extra structure.