I’m new to mapping. I’m trying to map the neighborhood common areas.

I thought I’d start with OSM maps, but they’re not in good shape for describing the right property lines - literally not the right shape, yet. For example, when I look at my neighborhood, there’s a grey blob named “Residential Area” surrounding all the homes, but it doesn’t follow their property lines properly. The boundaries of the neighboring research refuge are also incorrect, extending into the private properties and common areas. And our neighborhood appears to be labeled with a point as opposed to a containing area.

Before I start trying to add or edit features for my neighborhood, I need to learn what I should be changing and what I should be leaving alone. Do I edit the “Residential Area” shape to match the external boundaries formed by private and common-area property lines? And then can I label it with our neighborhood name? Or do I add a new shape with that boundary and label? Or, more likely, follow some other established practice?