I am a selftaught artist too. I think you know that lol
I know how hard it could, when you want to improve and you cannot find something helpful.
To help you, I post some links to websites with helpful and very good tutorials and How to draw things.
Hope I could help you
ENI Art some things about to draw faces, backgrounds,... german, but the photos he/she/it posted say everthing you have to know