Bourbaki,
My apologies for the delay in getting back to you, but I’ve been caught up with the holiday, soccer, and some emergency patio cleaning (life, you know, intrudes on art)
but am happy to see your progress here. 
I like the construction you are doing, I think that’s an excellent way to go about breaking things down. Don’t worry if things are ‘right’ or ‘wrong’, just try things as it’s the only way to break out of fear and to make progress. I like the way that you have broken down the nose individually ~ I would really recommend doing this breakdown for all of the individual features of the face ~ eyes, nose, lips, chin, ears, etc. ~ and also, I would recommend trying this traditionally, and if you have a camera or scanner, posting that work here for us to take a look at. 
A really good book which describes well the basic forms of the head and how to break down form into manageable pieces is:
Drawing the Human Head (Paperback) by Burne Hogarth
Burne has some other great books which are linked here.
I highly recommend Dynamic Figure Drawing / Dynamic Anatomy / Drawing Dynamic Hands. These are all books I have in my collection along with several others. It’s good to have a variety of books on hand.
This thread lists other good Anatomy related books:
This thread might be of great use to you: 
THE Anatomy Forum Referral Thread - Resources by Level of Experience / Category
Specifically, see post #2, which contains links for beginners, and post #3, which has links for intermediates. Admittedly, this thread isn’t totally up to date, but has a lot there to get you started. 
Also there is, as I mentioned previously, this thread which contains a lot of useful links for the forum: 
Tutorials, Workshops, Anatomy Reviews & More … [links within]
Cheers, 
~Rebeccak
(Well, actually only the last few games, but I actually like watching soccer and tennis more than any other sports. I can’t manage to sit through baseball or golf. ) 














