With my bad advice in hand, my husband purchased 10 gallons of Sherwin Williams paint today in satin sheen... help!! We are painting our great room with kitchen and I read that satin is too shiny for walls, is there anything I can do either to the paint in the bucket or after we paint to fix this, maybe a matte glaze coat (an uneducated guess)? We have already made some mistakes that have cost us extra money, I can't keep buying more paint... I sure hope there is something we can do. Any ideas would be most welcome.