Heat your juice over medium to high heat until it boils and and sprinkle in your agar agar a little at a time, whisking the mixture as you go until all the powder is dissolved. Agar agar needs a higher heat to activate the gel properties, so make sure your juice comes to a boil before adding.
Pour your juice and powder mix into a bowl and stir in your vodka as well.
Pour your mixture into your molds and let your shots set for 4 hours (or overnight) in the fridge. They should pop out pretty easily and be ready to decorate!
Sprinkle some gold sprinkles on top of your pink domes right before serving and your vegan jello shots are ready to go!