You can adjust this recipe depending on how many mocktails you'd like to make. If just making for a few people you can use half the can of lychees and juice, or if you're making for more then use the full can, but reserve some lychees for decoration. Add them and the remaining ingredients to a blender except for the lemon lime and bitters drink. 

Use the pulse button on your blender to make it into a nice crushed ice consistency. If you like it a bit runnier that's fine too - adjust the amount of ice to your taste. You can't really go wrong. It's going to taste amazing anyway! 

Pour the mixture into cocktail glasses - about 3/4 full. Then top up with the lemon lime and bitters drink. Decorate with reserved lychees and mint. Enjoy!