Blood Orange Blast

1 oz Smirnoff vodka
1 oz Cointreau orange liqueur
2 oz blood-orange juice
4 oz Sprite Zero soda
1 slice blood orange

Mix all the liquid ingredients into a cocktail shaker and fill to the brim with ice. Shake until cold and then strain into a highball glass. Take the ice from the shaker and put into the glass. Take the blood orange slice and roll it around the edge of the glass and drop it in.