Re. # 20.
They are still HIS works, and not our own. From that post:
Eph 2:10 For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand that we should walk in them.
We are "His workmanship", and He prepared them beforehand. We walk in them, but they are still of Him. Neat, huh?
The "not our own" part doesn't make sense, sorry. We are his, and therefore those works are ours, and also his, because everything that is ours is also his.