advice please
 

I would like to build my own rear fenders hump back style if anyone has a link or building advice that will help please i want to build them in styrene thanks

Re: advice please
 

My fenders weren't the same style, but the same idea should apply. I would use all 1mm styrene plates and layer them if necessary.
Cut a rectangle and bend it to the right curve.
Cut out the side profiles and glue one on each side of the curved rectangle.
The side profiles will help keep the curve in the right shape.
You may want 2-3 layers for the side profiles both for stiffness and to get it thick enough to sand the edges.

Re: advice please
 

thank you i will give it a try