Serious Girl I Like | Need Advice

So I've known this girl for about a year now. I live in America, and she lives in Croatia. She's not a girly girl, nor is she a tomboy. She's really big into Disney Movies, especially How To Train Your Dragon. Over the past few weeks I've started to grow feelings towards her. I think if I tell her straight up how I feel, that it wouldn't be the best. I don't know if she100% likes me yet. So what I was thinking is to kind of hint that I like her.I was thinking of maybe creating a custom romantic film score song, and including scenes from How To Train Your Dragon. I don't know, I just want her to know I like her, but don't want to ruin anything. Please help, thanks!