Nice video but I think the sound you use is subjected to a copyright and isn't that against the rule?

What if i use an animation from a tutorial? Is that counted as not original and copying? I am kind of curious of this. If my video's intro and ending is from a another person's tutorial ( downloaded the stuff it needed to play around and edited it ) , will that be count as a plagiarism act and unable to qualify for the competition?

This animation video looks good, I prefer this one to be the winner I haven't seen other video though, my internet connection is having a trouble playing video because of lack of reception from signal, will try to watch others soon.