The diffs should be generated with the full context:

git diff -U99999

You can also try using git-arc:
https://github.com/markjdb/scripts/blob/master/git-arc

It simplifies work with phabricator.

The patch LGTM, please remember to bump .Dd.

One more thing.
I'm not sure what commit msg you want to use.
So as a side note, many people give in the first line a oneliner containing the module/subsystem name and a meaningful description.
So for this case, you can use the following:

nv: improve the style in one of the examples

or

libnv: improve the style in one of the examples