When he was younger, Americans tended to think this was all very bizarre & maybe pretentious. In France, it was seen as the most desirable thing to do for your child for the long run. Outside of the US, the long-term professional/social/cultural benefits of bilingualism are so clear. I wd encourage you to think of that as a counter balance to your worries about the class stereotyping of hispanic populations in the US. You are doing your child an incredible service by teaching her how to communicate directly with the world beyond our borders. As my son grows older, I have noticed that even Americans are uniformly positive about it.
Your question is awesome! When you write about any of your talents or skills, it’s critical to include WHY THEY MATTER (have value) to you and the world. You can talk about your talent, and how you developed it, and how good you are at it. But then you must go into why that talent has meaning to you, and explain why and how. With snapping, I would try to find example of when you have used it. Has it helped your in certain situations in any way? Do you keep rhythm with it? I agree it’s a unique topic, however, if your snapping serves no purpose then it will not make sense to feature it here. If you believe your snapping reflect a quality that you have, then you could make the case for the value of that quality to show why your talent has value. Just don’t push it too far if it doesn’t make sense. Good luck!