Here's a few tips, and I'm serious.
1-Seriously, don't ask the public, whether it's online or offline, for advice on ANYTHING related to stuff like love. Ever. The advice you like the most may not be the best, it's better to listen to people you trust, because there should be a good reason you trust them, you know?
2-Regardless of how you do it, don't be awkward, it's better to be straight to the point and just straight up ask it in the most unromantic way possible than to choke up and look silly.
3-like 99% of every single girl I've ever seen in color guard was ugly as sin, I'm not quite sure how that affects you, just saaayiiiin~