Hello! Welcome to OpenStreetMap. 

One thing that can really help submit changes before you move to a new region of the map. This has a bunch of edits in Hawaii and one roadway in Montana. The tools work a lot better if things are broken up a bit.

https://www.openstreetmap.org/way/1167169779 - Is this roadway actually paved in asphalt? The bing imagery makes it look unpaved. Also, you can improve the tagging by makring it as an alley (https://wiki.openstreetmap.org/wiki/Tag:service%3Dalley).

The Mililani edits looks pretty good. One way to make sure things are nice and crisp looking is by using the "square corners" feature. Select an outline then hit 'q'.

I've made the changes I've suggested above. Let me know if you think any are in error or if you have any other questions. Welcome to OSM!