What signs make it obvious to a guy that a girl likes him?

Hi!

What signs make it obvious to a guy that a girl likes him? I think I am far too subtle and my cues go under the radar. I smile and wave at a guy sometimes start conversation but this rarely works. I tend to find with guys that I am not really interested in, they seem to like me? I feel less nervous around them. Maybe this is why? So how should I make it more apparent when I like a guy?

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+1 y
Also tips on overcoming my fear are welcome
What signs make it obvious to a guy that a girl likes him?
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