One of Mark Stoddard's bartending rules: Always shake toward yourself.  Makes 1 drink.

Ingredients
1 1/2   ounces silver tequila such as El Tesoro Silver Tequila
3/4     ounce fresh lime juice
3/4     ounce orange liqueur (Leopold Bros., Cointreau, Grand Marnier, Patron Citronge or another high-quality triple sec)

Directions
Combine all ingredients over ice in mixing glass and shake for 10 seconds. Strain over fresh ice in old-fashioned glass. Garnish with lime wheel and orange wedge.