Good lighting ... essential!! White or bright colored walls to reflect the light as well. Study the room carefully in different lights of the day before you place sewing machine, cutting table etc - so you know where the dark/shady places are going to be. And remember overhead lighting casts shadows when your standing, so make sure you place lighting over something other than YOU.
Also, I only use "daylight" bulbs in the house. The lighting is much more natural and brighter - easier on the eyes.
Sue