First approach ever, so I went light, now I'm seeking advice. I've seen this cute girl at the gym a few times and she was doing stretches on my way out and I just said fuck it. I approached and tapped her on the shoulder. She looked up and flashed a soft smile on her face, that I can describe as conveying anticipation or awe

I decided to open using her leopard pattern outfit

Me: "hey, I've got to head out, but I wanted to say you have an interesting outfit, it gives you an adventurous vibe". Her: "thanks" Introduced myself, she said her name, shook hands. Her: "have a great day"

She maintained her smile throughout, and I knew this would be a rushed interaction as I was spontaneous and set the tone that I was leaving. I'm not sure if the way she smiled was an IOI. Any suggestions now that we've introduced each other and I can address her as a familiar face?

Edit: spelling and re-worded the type of smile she had