I am impressed with the amount of work you have put into your anatomical studies.
I should follow your example.
Just a side comment...all of your characters appear to look sad. Given that, you may want to work on giving them different expressions...happy, angry, giddy,etc.
Other than that, just keep at it. It may not be much coming from a hack like me, but I see some great potential in your work.
If ya mess with the big dawgs, ya might git bit!!