I wouldn't say you're a good admin, at least not from what I've seen playing with you. This doesn't necessarily mean you're a bad admin either.
After playing with you, I noticed you dragged each round out more so than it had to be. This isn't against any rules, however, I think it stands against what most people would prefer. In my opinion, as an admin, this sort of thing you should be aware of and try and avoid. On the other hand, you have a right to play the game as a player as well, so really it's a double edged sword.
In any case, my opinion of you is slightly below neutral on the negative side. If this were a report card, a "Room for improvement" would be my final verdict.