When cooking with shrimp, it is a good idea to keep a close eye on the color of the shrimp so that it doesn't get overcooked. Shrimp should turn a bright pink when cooked and shouldn't boil for any longer than that. If you are incorporating it into a sauce, then cook the shrimp to the point when it just turns pink. Remove the seafood from the sauce and then re-add 5 minutes before serving. This way the shrimp will be hot...