Attached is an extract of Exercise 11 for those that just want to concentrate on that exercise.
There are two things I want to consider adding into the mix to make this a better experience.
The first and most relevant would be Robert Holmen's video that deals directly with completing this exerise.
It is my understanding that he created that video after several had experienced difficulty at various stages of modeling.
The second is to review the tutorial from which this exercise came.
Many A:M users may not be aware of that tutorial from previous manual that not only took the user through modeling but pressed into rigging of the giraffe as well.
(Referenced lInks and attachments to follow)
A good idea is a seed, not a solution or
"You can lead horses to water but they still will not animate feature films."
See my effort to think about the art of animation at: My Blog