When you arrive home check to see that he's followed the instructions.
Is he wearing the plug?
Did he shower and shave?
Did he touch his cock?
If he didn't follow your instructions don't act surprised just tell him you're not really in the mood for sex anyway and that you'll probably head to bed early tonight. (i.e., no sex for him)
If he followed the instructions give him a kiss and tell him you hope he's as excited as you are.
Tell him he has one last chance to go to the bathroom before the fun begins (make sure he goes).
Once you're in the bedroom (or wherever you decide to play) sit on the bed then throw him a blindfold and tell him to put it on.