My living/kitchen/dining are all one room (about 600 square feet). I'm using the same warm white through out. I would like to use a semi gloss on the kitchen walls, gloss on the upper cabinets. I'd like the dining/living to be egg shell or satin. There isn't a defined line to change from the semi gloss to another sheen. Do I feather the point of change? Or just find a place and camouflage it with a plant or picture? Or do the whole thing in egg shell/satin? Or am I just over thinking the whole thing?