Newbie need help: Ugly trousers

Hey,

I'm prettty new to daz3D here is my first experiment, overall I'm not too unsatisfied, he is levitating :-) but I know how to fix that.

My problem are the trousers! They do not look even halfway realistic, what can I do about that?

Engine is iray and the trousers and their texture are from: 

Any helpwould be very much appreciated.

kr

Timm

P.S. Please ignore the pose :-) Thats a try on a ving tsun kung fu pose.