My L shape layout is in a square room about 9ft square, one side runs in front of the window and the main light of the room is behind me so I'm often working in my own shadow. I'd appreciate some advice as to how i could fix up some simple lighting, would battery powered LED lights be an option, they'd have to be fixed on the walls, or could i fix some sort of along the mid length of the layout and string some lights from that. I've attached a rough sketch which for some reason appears upside down, but hopefully you'll get the idea.