Excellent work! Very funny, good animation, great music of course, all-in-all a good animation. Well done!
The background sometimes was too white and blocked out the guy. Especially in the beginning it was hard to make out the arms and skin. A quick fix is just outline the person in black or something, to set them apart from the background. Could just be my monitor, but it is always a good idea in my opinion.
It would also be nice to have more detailed backgrounds. It doesn't need to be a painted landscape or anything, but it would have been nice to have little white dots for stars at night and grass or trees or something for the daytime stuff. Just a suggestion.
I was very impressed by the music. I didn't really expect not to be, but this song was very, very funny and went well together with the video.
Honestly, the only problem I had was the backgrounds. Everything else about this video was great. Awesome video, let alone first video? This is far beyond the quality of a 'first try'. Great job!