Looking pretty good for a first attempt!
When learning to model heads and other organic shapes. It's best to actually build a Human head. This way you'll have a tons of reference, plus plenty of other people have modeled them already, so you can learn from their models.
Anyway, don't let some of the work the locals are creating get you down.... some of them may be creating master pieces now.... but not so long ago they were struggling to create primitives... Stick with it... keep practicing.... don't give up!
Not an X-files Fan by any chance???
www.stevenegan-cgi.com
"Your weapons are no match for ours! People of Mars, surrender!"
"Um, this isn't Mars. This is Earth."
"Earth? Earth-with-nuclear-weapons Earth?"
"Yes."
[long pause] "Friend!!"