Hi the feature is mapped as a multipolygon, a building in plan form that has a hole in it. You inadvertently removed the hole which depicted a courtyard. No problem I've reinstated it.
Regards Bernard.

Hello and Welcome to OpenStreetMap.
I think you are mistaken with the two apartments by the roadside. Could you please remove them and/or map them properly. If you need any help please just ask. I'll remove the two apartments in due course if there's no response.
Best to read up a bit before contributing to OSM, it's a little bit complicated.
Regards Bernard

Hi, I moved the park from being joined to the roads and railway center lines.

Hi and welcome to OpenStreetMap.
The park is already mapped in this relation :- relation/6521066
Thus the new area outline is duplicated, though there is discrepancy between the outlines. Your new area could be removed and the existing area/areas be amended, this would keep the history of the park mapping intact.
Regards Bernard

Hi, the area can be leisure=park and at the same time the landuse tag can be landuse=village_green. In fact the name says it all!
Regards Bernard

Hi I reverted the changeset that extended park into sea.
Regards Bernard

Hello and Welcome to OpenStreetMap.
Just wanted to let you know that I reverted (put back as it was) this changeset because it dragged many areas out of shape. I'm sure that was not your intention. Would you like to try again at modifying the garden and if I can help please just ask.
Regards Bernard

Hi, I removed the relations you added because they just didn't make sense. I've joined the paths to the roads. also amended and retagged the areas.
Regards Bernard

Hello There and Welcome to OpenStreetMap.
I also had a quick look at your additions and would just point out that if the buildings were squared up they would look even better, (neat & tidy). It's easily done in the iD editor just select/highlight the outline, right mouse click, select and click the square icon to 'Square the corners of this area'.
Regards Bernard.

Hello There, you've added the bench to the long highway Green Lane, either a very long bench or a small mistake. Would you care to remove the bench tag from the path and have another go.
Regards Bernard.

Hello there, that's a great deal better, well done. The buildings will now be rendered properly. However there's possibly a small problem with the mapping. If the houses are a terrace of houses then they should be joined together rather than depicted as separate dwellings. You could have a look at the terraces on Alderbrook Road (not far away) to see how terraces are better depicted. Please just ask if you need any help.
Regards Bernard

Hi, (service_times = First and Third Sunday 8:00am) this isn't recognized in OSM, I've changed it to a note= or you could place the info in description= tag.
Regards Bernard

Hi, just tagging features as area=yes does not convey enough info to the database for a feature to be rendered. A feature needs to be described in the tagging, like building=house. If you can't determine what the feature is then please leave it till you gain more experience. There are plenty of guides to help you or have a good look at how surrounding similar features are tagged.
Someone will eventually go over these 34 area's and re-tag them no problem.
Regards Bernard

Hello and Welcome to OpenStreetMap.
Tagging a building with only area=yes is rather meaningless. If you don't the use of the building then building=yes. For a house tag building=house and so on.
Regards Bernard

Hello and Welcome to OpenStreetMap.
The correct tag for a park is leisure=park, that would be the reason for the area not rendering properly. Both recreation ground and park are now tagged, please remove any that arn't applicable.
Regards Bernard.

No response so I've added bridges and extended the canal to the river. Regards

No response so I've adjusted the ways. Regards

No response from mapper so I've made Monkham's Avenue lanes=2, and removed the address tags.

Done, gate tags added to node and emergency=yes added.
Regards Bernard

Hi, it would be good to know what the fire point actually is? Folk would then understand it and it might be rendered. Is it a hydrant, a fire place/BBQ point, extinguisher or maybe even an assembly point in case of a fire?
Regards Bernard