Hello thanks for checking this post it is a nurbs female head with procedural textures it is built polarized from inside the mouth if there are ne tips or tricks for building nurbs heads it will be appreciated thanks 
hmmm...large cranium, must be an intelligent spieces 
I think, its ok for a first attempt. The face at least is well porportioned. I would suggest however that you will get far better results if you learn to patch-model properly in the way NURBS are designed to work, as opposed to deforming a sphere/cylinder that you have clearly done here. That way, at least your isoparms can be arranged in a decent manner allowing you to model each part of the face and the head itself both in porportion as well as follow good lines of geometry to use for animation and texturing. ...and do notice all the pinching you are getting on that texture.
...speaking of texture...scrap that totally. Never slap a procedural on something, especially a human head, and expect anyone to like it....you wouldn't. If you had patched this properly and evened out your isoparms, you could project a texture evenly over the surface, for example, bake it to solid texture so you have each patch with its own texture file (as nurbs are implicit surfaces) and then you can happilly paint your texture up piece by piece. Until you have created your different texture layers, eg, diffuse, specular, transparency, specular, bump, displacement, etc, I would suggest that exhibiting work with slapped on textures is a sure way to put people off. Its all about presentation 
...better no texture at all than a nasty half-made one or slapped-on procedural.
Anywasy, you have a good eye for modelling, so I would suggest you need to grasp patching technique in order to move to the next stage.
Thanks for the critque it is much appreciated i m working towards patch modeling here is a wire frame and hulls
Ah yes, as suspected, and an attempted cleanup by getting the curves and lofting them together. Yes, patches, learn to use em.