Nice frame by frame
Congrats on getting your first award! I'm glad you are very proud of this animation. I thought it was very well done. I really liked the little pixel creature. It flowed nicely with the music, and it is great that you are putting so much heart and effort into it. You say it was the hardest, and that's great that it paid off.
I'm not going to critique the lack of color or background if that's the way you wanted it. Some of the characters looked a little odd and need some working, but I can see a very LazyMuffin-esk style in yours. I'm not sure if he's one of your inspirations, but some of the bodies reminded me of his work.
Nice job - keep working, you have a great knack for fbf'ing. Screw tweens.