It's pretty good pixel work. Something I found strange was the running sound at the beginning. It's a bit short and i'd like to see more action. It's also best to use all original work, specifically the punching-bag i'm centered around. If the animations are really not going anywhere, i'd suggest a collab, or just submit artwork. I never really see pixel animations take off unless it's a game. A bit disappointing, but I wish you luck.