Hi, am making a quilted wreath and in the center am doing pictures on muslin with inkjet printer. Am using Iron-on stabilizer for Ink-jet printers by Mountain Mist and muslin for material. My question is do I need to wash this muslin first before applying it to the stabilizer so ink penetrates properly.I do know I heat set it after I am done with printer. The instructions only say to pre-treat material. Thank You for your time. Dana