PLEASE! make sure that everything on your set and appropriately on your character is FIRMLY in place. It is very distracting and even takes away from the point of stop motion animation when objects are choppily jiggling around on your film. Stop motion animation's purpose it to create a sense of "wow, it's alive" but that sense of 'wow' dissintigrates when stuff moves around and it's not supposed to.
On the other hand, you did a nice job with the apple, even paying attention to the detail of having it white on the inside after he took a bite.