A really exceptional shoutcast to make you think more about what you're doing in game. Practice, practice, practice. When things feel fluid you are probably doing it right.
Every small bump slows down your overall game. Don't concentrate on rushing buildings to fufill set build orders. Concentrate on making sure there is never a gap between a workers actions, your scout is always moving, you have control of the watch towers with 1 zergling, marine or probe. Concentrate on never being supply blocked.
These fundamentals will allow you to improve whatever the situation, whatever the map, whatever the build order you are going for. Even if you are building the incorrect strategical unit, the fluidity of your play should win the game.
At most levels perfect execution of any strategy > subpar execution of the optimal.