Creases solution

Getting back to the brown trousers...yes, the creases bothered me. So I thought about them, wore the pants, looked, pulled, pinched, and - aha! There is too much fabric there! Oh, my derriere is rather flat, let's admit and face it. 

 

See? Already looking better.

Well, it's not perfect since I pinned myself, but at least now I know what I have to do to alter the paper pattern. There are two great tutorials for flat seat adjustment here (Ann Rowley) and here (Debbie Cook) for removing excess fabric from the back legs.