creases in lastolite coloured backdrop

[Marx]

I've recently purchased a lastolite collapsable mottled backdrop with train. It has more creases than an elephant, and proving very difficult to get them out. I've tried a curtain steamer, which has helped a little. Any help would be greatly apreciated

 

[vetonbike]

Not sure of the size of this backdrop. But hanging it in a steamy bathroom should to do it.