Not a teacher.
In the example you cite, the distinction is very small.
In other contexts, they are not interchangeable. For instance, a stuffed animal or a blanket may be "fuzzy," but it is no blurry. Likewise, a page that has been photocopied three times and faxed from overseas may be "blurry" but it is not fuzzy.
Blurry means lines are not sharp, and fuzzy means that the covering on a surface (think of a sheep) makes it unclear where the boundaries are.
Student or Learner