FWIW, I would move the sewing table in front of the window - whether you face it looking out or towards the room doesn't matter. The natural light is provides would be a plus (for me) especially during the winter and you could enjoy the window to see what's happening outside. You could then use the space where your sewing machine is now for more shelves, a cutting table, or for an ironing station.
I agree with those who said to organize your fabric. I did this a few months ago and it was well worth it!