Is it too late to compliment her?

So I have a crush on a girl and I have her on kik. She's in a group chat I'm also in. Anyway, she changed her profile pic the other day. I think it will be nice to message her and say "I like your new pic" or something. I just hope it won't seem weird if I tell her a couple days after she changes her picture. So should I do it?
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+1 y
And if she does like me, how would she respond?
Is it too late to compliment her?
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