2D Studies and Drawing - Human Anatomy and Body Structure

A while ago I started waking up early in the morning and doing 1-2 hours of drawing practice before work.
I have focused on drawing and re-drawing the human mannequin from reference and photos and then recalling from memory. Below you will find a sample of the better pages I have produced.

Due to starting a 3D personal project I stopped drawing for a while and moved on to sculpting in the mornings before work but this is a good sample of the exercises I managed to do.
I absolutely plan to go back to more drawing and start from absolute scratch and practice perspective and fundamentals as soon as I wrap up my personal and/or freelance projects.
I will be updating this thread as I go along so feel free to come back and check some more progress in the near future.

You may find some copies of other artist`s poses and/or creatures. This is purely for educational purposes in order for me to learn from others and study their construction and perspective.  

Thank you for your time and interest,
Vick.