Well, it seems like this was a pretty nice cartoon for you to make. I just didn't like it how it was so short and not a lot happened. Of course, you don't need to have that for a good cartoon. I really know nothing about tarot cards, but I think it's interesting that this came by you from a school project. Some great stuff from this website has come from school projects. The animation is pretty good.
I just like how this has a good homey feeling. It doesn't try to be too flashy or elaborate or anything. It's just a short simple little cartoon about a crab trying to interact with his world. I found myself rooting for him a bit. The sound effects are pretty good. I like the omnious music too.