When it comes to rendering by hand, "Soft goods and apparel products can be a real challenge for designers," writes industrial designer Eric Strebel." They're not shiny plastic objects, but are more organic and flowing. Getting the light and lay of the material to read correctly is key to conveying the story you want to tell about the product you designed."
In this video Strebel shows you his tricks of the trade by rendering a pair of ski gloves. He covers everything from the kind of paper and markers he uses, to rendering techniques specific to soft goods, to tips for getting texture using sandpaper and screens: