I'm interested in painting a free hanging mural on natural linen with acrylics. I've tried using Golden's GAC 900 fabric painting medium, but it stiffens the fabric slightly. I'm hoping to find a technique/medium that will leave the cloth somewhat soft. I've seen a few French, commercial murals of topiaries done on natural, dark linen for hanging, but haven't been able to find a technique to follow.

Thanks for your help.