I can give a couple pointers right off. Everyone uses some autotune or pitch correction. The thing about it is not to over use it. You didn't overuse it. It was fine on the first one. So from both your pitch sounds fine.
What I would do is bring the mic closer for the proximity effect (drop the mic gain though), and use some reverb. Maybe a delay + reverb. The vocals sound way too dry. Set the delay on the quarter note about -15 db 100% wet (use an AUX channel), and then add a reverb to it and blend to taste.