your voice is lovely! really good on the high notes! your voice didn't crack going from low to high, you transition very smoothly..that's hard to do! if you're feeling nervous or rushed, try practicing it slower with pauses so you can bookmark the places in the song that trip you up. this has been helping me.
if i'm anxious i have a hard time connecting with the emotion and the meaning of the song, i usually have to close my eyes and try to keep my mind completely blank while singing (and then i forget the words )
but don't think about anyone's expectations while you're in the moment because then you're just clouding your mind with unnecessary pressure. don't beat yourself up, remember it's supposed to be fun right? :)
