Ooh! I was hoping for some textures for the flip hair. :o)

Okay...I think the golden blonde looks okay...but it's a little dull. Her hair looks unhealthy. Maybe add some highlights?
The platinum blonde hair just looks like a helmet almost. I would try ading some more darker colors in there to make the distinction between hair strands.
The strawberry blonde....well...it needs work. It does look like someone really screwed up her dye job.
It think the black hair looks pretty darn good...but it also looks a little dull.

I think that about covers my first reactions. They look like they are coming along though. I think a new transmap would be beneficial also.

RemCreations - I can barely see those hair textures. Maybe show them in brighter lighting on a lighter background?