Sorry, but the drawings aren't stellar.
Not to say they aren't good, just the opposite. This is ultimately a pretty useful tutorial, but you were right when you said that with some practice, somebody could easily get to be better than you. Your forms and shapes, especially the eyes, are very well done. Your shading, however, could be better. Try losing the gradients, just to see where it takes you. Nice job.
Also, if there's a sequel, music would be nice.