The quickest way is to use the face room - make a face and print it life sized as a mask - punch out 2 holes for eyes - and rob your local branch of Barclays bank :) 

Seriously - just kidding. You can use poser for all the stuff above or try the thread around here that ask what kinda non digital art some folks use poser for. Some may work for you some may not. 

Either way it will involve a lot of effort, time and hard work, sometimes expenisve and challenging and mostly you'll need lots of practice. 

But the best bit is it's FUN!!

Pinky - you left the lens cap of your mind on again.