Shaking: it is the most efficient way to chill and dilute a drink at the same time. Correct shaking will break the ice and cool the beverage. It is great for drinks with dairy or eggs because it creates foam.
Stirring: it is a gentler technique. It mixes delicately and gently the spirits with correct dilution from ice. Most gin and whiskey drinks are stirred.
Pouring: for a shaken drink, pouring is easy. It just has to be poured in the right glass. Depending on the drink and recipe, you can put some fruit bits or ice in the glass before you pour.
Layering: for a layered drink, pouring technique is important. Pour the heaviest drink first and use a spoon to demarcate different layers. It requires gentle handling to get a perfectly layered drink.
Blending: make sure that you blend the ingredients well before adding ice. Better to break the ice into smaller pieces. Start slowly and increase speed. Check consistency before you serve.