Thank you :D Yeah anything with a nice shadow reference will always be easier lol. Yeahhhhh I always forget my birthmark hahah mainly because I see it everyday that I don't even notice it's there anymore. I also thought of adding it before but didn't care that much anymore hahah it's nice you noticed it.

Nice! It only takes some practice and even basic knowledge and human anatomy will do. You don't need to master them in my opinion unless you want to go full human drawing without references. ALways depend on what you are most comfortable with :D You can do it!!