I need some advice on painting scrims. The only scrims I have painted have been small sections sewn into opaque muslin backdrops. Now I need to paint 2 drops that will each be suspended to where you can see all edges of them. Do you have any tips for getting started? I'm ok with the actual painting part, its just getting to that point that I need help with. Do I need to size/starch it? Can you sew pipe pockets into scrim? Do I need to do something to the edges to make it stay straight when it's hung? Any tips you can give me would be greatly appreciated!