Wow, thanks everyone!!
Uh, I used subdivide and smooth mostly, here's a picture of the original mesh (drawn by hand) before subdividing:
The whole mesh:
mesh.jpg
The face:
face.jpg
As for posing, it can be posed, whether by posing the mesh before subdivision, or using fredo6's fredoscale plugin (cool plugin by the way). Here's an example:
pose.jpg
Thanks for the hairstyles solo, they're awesome! I want to know how you make them (if it's ok π )? I'll try them on for a render and get back with my results!
I'll also check out the 'sculpt tools' plugin, I only found about it just now, thanks kwist!