How are you currently using it? Bouncing it? I'd suggest expirimenting with putting the flash on a stand and shooting it through an umbrella. If you'd like a in depth break down on how to do this and what you'll need to do it, I have article on this very topic on my blog. Visit www.bradhardyphoto.com and click Blog. You'll find it there. You might also check out strobist. Strobist can offer you far more info on the topic then I can :)