Rub the wedge of lime around the rim of a cocktail glass. Pour salt into a small dish. Run the rim through the salt to coat. Fill with ice. Set aside.

Fill a cocktail shaker halfway with ice. Add cranberry juice, tequila, lime juice, and orange liqueur. Seal the shake and shake well until well-chilled, about 20 seconds.

Strain into the rimmed cocktail glass. Garnish with a lime wheel and fresh cranberries.