I did this print in 2 parts where the top is a heart shaped balloon and the bottom is the base where you can insert inside one led flame tea light candle from the begginers kit.

The print profile that I upload have the two part already cut ( with connectors) and oriented to print in two different plates so you can use different colors.

Also in the design I did the circunference of the top part ( balloon ) big enough to fit the candle in case that you dont want the base. 

The base part is big enough to fit all the candle inside leaving only the flame bit visible to make the model look more accurate.

Fell free to leave any comment and reccomendations!!