help with hair textures (prims)

Hi.

I have some hair textures. ( bought them not my own work just wanted to learn from )

anyway.....when i apply the texure to a prim i cant get the prim flat enough ..theres a seam or lip/edge ive tried applying an alpha texture to the edge but it still appears to thick to apply as a hair prim?

I suspect on a curl with a point on the end it wont be a problem but a long flat edge...leaves this obvious edge/lip were the alpha is.

I am BRAND new in creating prims for hair so am I missing a technique?

Id appreciate your help as i know most ppl just prefer not to give their 'secrets' away for fear of competition but seriously...i am NOOOO competition lol...just wanna learn something creative instead of selling Textures.

Thanks In Advance