I don't think fancy gimmicks like T-splines are necessary for this type of work. My model is made from simple lofted curves running down the head and I've had no problem adding extra control points
where more definition is needed.

What would have sped this up a lot however would have been

1. a standard translation widget and XYZ axis lock to make it easier to push points in the right direction
2. a control point slide tool that lets you slide one or more control points along a curve