If you'd like a duet or just talk you're welcome to skype me xdxd
In comparsion to the cover posted on NND, I think you've improved. You don't seem to be forcing your voice out as much, which is good. I think what you'd really need to just focus on now is where you base your singing. You sound very nasally, like you're literally singing out of your nose, but no worries! That can easily be fixed by practice, just learn to breathe deep, from your stomach, before you sing and throughout the song. You want to make sure that you're not singing from your throat either or else you'll never be able to hear the REAL depth of your own voice. You have a very beautiful voice! It's lovely, just remember to practice daily! :D
You seem to have a nice range to boot, which will always come in handy. As I said before, you're not forcing your voice AS MUCH as the previous cover but, I feel like you still are a bit. When you do it, it comes out very breathy which can really mess up your breathing while singing, espically with fast songs.
Along with your breath control and voice basment I think you should also focus on your pitch. (not that there was really a problem with it in your covers, but it's still very important.)
So yeah. XD I learned most of those things from Vocal trainers and youtube so if you find yourself in thick waters, you can always google it or youtube it.
Hope I helped some (and wasn't mean about anything >.<)