That may seem intelligent, but after two serves, any competent opponent won't fall for it. They'll just react to your serve, not to where you look, and in most cases, trying to be deceptive weakens the serve. I find it most effective to always look the same - same stance, same places I look [first at the opponent, then the shuttle, then at the net as I serve]. Flicks get very effective this way, if you can resist the urge to move backwards as you serve [most tend to do that and give away their intentions before striking the shuttle]. Always having the same position also helps your consistency tremendously. I know some players who try to serve decpetively - it may be effective the first 2 serves, but any good opponent knows what they're doing after that and is either not hindered by it or even more effective (as they never serve where they 'show' it). They are all weaker on serve than me, even though I always look the same and serve to the T or just slightly wide 90-95% of the time. Getting the serve very tight is much more helpful, and if you spend the time you practice deceptive serves on getting tighter and more consistent, you'll be much stronger on serve.