to create a biped-rig for Blender-2.59.x
just use the built-in armature.
Shift-A … append armature, but not a single bone,
append the biped skeleton (human meta rig).
Then wheight-paint the body-parts to the bones for deformation.
Nice thing for this default rig, you can later … or first to try it,
enable the creation of the rigify-addon and run it for it and
you get a quick-usable setup for animation (with shapes).
not very bad, but you are lacking quite a few key points of anatomy as Freemind stated…pull up a picture of the anatomy wheel (front and back) and take a look at the points you have missed…the largest points are in the shoulder and upper back regions
It’s more about how the mesh deforms + topology.
If you follow the right muscles and get good edge flow, the mesh will look and animate more naturally.
Yes we are wearing clothes over the upper part of the body, called Gi.
(I’m practicing kendo myself since 2years) (but thank you very much for your researches :] )
I tried to create this “Gi” a few times but I failed very hard.
And I guess it will be much easier to animate the guy without it.
Besides the whole model could look much more interesting when you can see some muscles.
(what do you think)
I think I’ll start working on a new body and try another Gi later…