That is a HUGE improvement! Make sure your angles (bends) are crisp and your wires are straight. It doesn't take much to throw everything off but you are on the right track! I hope you do well! You can try scaling your reference anatomy drawings to the size you are working with and printing them as a transparency. That will help you reference as you sculpt.
This is a great thread so far. I admire how you have taken on board the advice you have been given & used it to start creating what is already a far superior sculpt to the one you started with. You could now teach your Professor how to build armatures! Looks like you're off to a solid (re)start & I'm looking forward to seeing how it turns out. I have a feeling it will be impressive. More power to you