So I decided to try messing around with the different brushes I have in Sai. Something I should be doing more I know but anyway. I drew 6 facial expressions in 6 different ways, just to see how they work and what I prefer. They are as follows:

Top Left: Custom Linework Pen outline, Pen tool colouring/shading
Top Middle: Pen Tool colouring/shading, no outline
Top Right: Custom Linework Pen outline on a much thinner setting, Airbrush shading, Kawaii Desu Onii-chan~ style
Bottom Left: Brush tool and Water tool. This was the hardest one, if I ever decide to try and do more brush work, I'm going to need a lot of practice.
Bottom Middle: Acryllic Outline and colouring. An interesting brush.
Bottom Right: Binary Tool only, Final Destination.

So yeah. Actually I like the simplistic look of the binary tool. I might try a few pictures just in binary.