I don't know how I feel about this one, the A5 and C6 notes seem off in a few places. But changing them, or leaving them out doesn't really work for me either.
I was messing about a while back, (I haven't decided if i'm going to publish it or not.) And oddly, it helped me. I don't really know how to explain it, but I feel I have a better grasp on making melodies now.
(I've also found an UTAU I like, Kazehiki. I've been messing around with that program for a bit, too.)
I hope everyone's having a great day!