good studies i know this is sooooo hard!!
i think this is the hardest thing to do "self portret studies"
but you will learn alot from it and its verry important!!!
always look in a mirror!! draw from life don't use pictures
its good to use pictures when u need some reference
when u have some amazing idea, but when u draw yourself
dont use pictures, but a mirror!
try to have sharp pencils! it works for me you
can make better and thin lines then.
use different sorts of pencils! use light one's in the beginning
then darker ones on top of them!
try to focus, try to take your time for your lines
i know its very hard i got troubles with it to, but never give up on it!!
hope this helps a bit