Poppy, I'm no expert, but the hair looks great to me! In fact the whole image does :)

the hair can use a bit of detail, I usually do this by making several layers. Remembering that hair does not lay in a glob on most heads, I make several layers using different colors, varying the brush settings between screen, overlay, normal and maybe burn...or dodge, I use a very small brush and begin making the hair in squiggly sweeping lines...follow the flow of what you might imagine is either the air or gravity....if the figure has turned their head you can add the idea of motion by swirly hair lines...also remember that hair catches the light differently so I might experiment with a light on one layer another on another layer....vary the opacity then when you get the look you like collapse the layers.... the trim on your clothes is a bit flat...maybe you want to bring it up a little with a touch of nozzles ...or otherwise put a little touch of something...her neck needs to be smoothed where it is twisted a little, and a touch of a highlight on the lips...hmmm...just a little light to brighten the lovely face.... Your image is very good, I hope my suggestions help you explore other ways of preparing the image....I hope you do not think that I am not likeing your image, but you did ask for some suggestions....

Did u use the curly hair for the p4 women. And did u include a transmap because I am in need of one.

Lorraine , thanks so much for your help it means a great deal to me to get advice from people who know exactly what they are doing!!:) I really appreciate it! the hair looks fantastic and I see what you mean with the trim.she looks so much nicer now:)) I'll keep practising with the hair. (No I used the long curls for her) Thanks again Poppy