I saw a card very similar on Pinterest (but with different colors)... I wanted to keep mine masculine for my nephews birthday. Not sure if you can see it or not, but I used the Party Punch Pack (balloon) to punch out the balloon and added a glue dot behind to make it pop up a bit!
Thanks for taking a look!
Stamp Sets - Party Wishes
Ink - Memento, Crushed Curry, Mint Macaron
Paper - It's My Party DSP, Mint Macaron, Whisper White
Accessories - Party Punch Pack (Balloon)