I have jumped in with bothfeet on the FMQ, thread painting, or whatever name some other wordsmith is using at this time.
Please check out my few threads, In my attempt to do just the thing we speak of. I must admit I had no idea what I was doing I just bought the machine,some thread, and a hole lot of fabric, and just put needle to work. I have had so much more fun doing it my way, Right or wrong only you know what you want to do. So my advice is to (just do it) the outcome might just surprise you.
Ray..