Since you said this is a class project, I'll my pointers to you so you can improve when the next time you animate.
Overall, the animation is really great, and I like the simple story you put in there (The guy having a hard time opening the can with a regular opener and then uses an electric, auto-opener).
However, there were some shots in this scene that are a bit rushed, probably after 00:10. You have some shots that depicts the guy's emotion; just linger that shot just about maybe a second or two longer so that the audience can know what he's feeling (anger, surprised, etc.)
Then again, the video is at 20 seconds so I have a feeling your teacher or professor's limiting on your time on the project, which is understandable. You don't have to stop there if you wanna continue adding on.
For the walk (this is more of a technical standpoint), watch out for your swinging arms. The swinging distance is fine, but it's just evenly-spaced. Add ease-in's and out's so the walk looks more natural.
Hope my advice helps you a bit.