Well I think style is easier to see from an outside perspective and by that I mean it's easier for others to notice than it is for ourselves. Just like you, I don't think I really have a style, but it was said to me a few times that I do have one of some sort.
As for your art, there's for example a way that you draw faces that's distinctive. It's not a single thing in particular, but things like the head shape, the general placement of the features, the way you draw lips and noses all contribute to a specific look. And that's your style. And it's nice!
Anyway, sorry for the rambling 
I like those floating girls sketch you've posted a few post up. The left one in particular looks very nice. I love the feeling of calmness and confidence that she gives off.
