What is Your Style?

I was reading a description of an Artists' Retreat when I came across this line, "We would like every participant to share a technique with the others that shows his or her style..." and I was totally stumped. What in the world would I show to the others? What is my style? I like graphic art and collages, robots and computers, hiking and biking, reading and going to movies - but that's an eclectic personality, not a "style." My art is fairly structured with excellent balance (that's the engineer in me), but it's also rather simple and lacking depth. I like a little whimsy without being cute. I'm getting fairly good at assembling compositions from handmade papers, sometimes adding a touch of watercolor, pencil, or oil pastel to the backgrounds. But it's time to take it to the next level. The problem is trying to figure out what the next level is???