A top shelf version of the classic you already know and love, made with top shelf reposado tequila, the best orange liqueur, sweet agave nectar, and freshly squeezed lime juice.
Rub a rim of the glass with a lime wedge to get some juice onto it and dip it into the salt. Set aside.
Cut the lime in half and use a lime press to squeeze fresh juice out.
Add some ice to the cocktail shaker and add reposado tequila, Cointreau, fresh lime juice, and agave nectar.
Close the shaker and vigorously shake for about 20 seconds.
Add some ice to the glass, carefully so not to knock off the salt off the rim.
Pour in the margarita into the glass through the strainer.
Alternate method:
If you like to keep the "dirty ice" (i.e. the ice that is in the shaker when shaking the cocktail), you can pour in the entire content of the cocktail shaker into the glass instead of using fresh ice in the glass. Make sure to use just enough ice to shake the cocktail that will fit in the glass.
Notes
Remember, the best ingredients make the best margaritas. Try to get the best tequila and orange liqueur and squeeze fresh lime.
Based on personal preference, you can serve margarita over ice or neat.