Aww, I think you did a good job. xD I mean, you kept pace and the pitch was spot on. I give you major props for tackling this. Not only that, but I like the effects you used. o: You have a lot of energy, which is good. Annnd, Vocaloid = <3.
you did great. one thing tho', this song isnt by Miku Hatsune. its by Loituma. heres a link to the original http://www.youtube.com/watch?v=1ygdAiDxKfI and, just for fun, heres the basshunter remix http://www.youtube.com/watch?v=F3EJP5ugfYc