Crinkle Fabric

I want to make a collared wrap over blouse from crinkled fabric.
The pattern is New Look 6252 and the fabric is a burnt orange and gold crinkle polyester fabric.
How should I approach the collars and cuffs etc?
Should I iron some of the fabric flat and use that for the collar/cuff/facing, or somehow try to fuse whilst maintaining the crinkle?
How do you keep the crinkle when assembling? What about pressing seams, hems etc?

I would appreciate any tips you might have to share on this, because I really want to make this wrap top for my SWAP :-)

Brown self stripe pants are done

Phew! The brown self stripe stretch woven pants are now finished.
On this pair because of the amount of stretch in the fabric I had to take an additional 4" or so out of the waist to keep the pants up.

Onto the test jacket/coat next which is all cut out ready to go.