The sketch below is a trend research from 2009 for knitwear, Summer 2011. I'm usually not a fan of overtly asymmetric cutting and will always feel a little odd if one sleeve is so much shorter than the other. But with this design I am strangely compelled to give it a chance. I think it may look interesting using different knits for each of the panels.
You'll find all the pattern making detail on the website blog.