The submission format has changed been changed a few times, so keep that in mind; this may be different this year. However, If I remember, with this past years submission on www.FIRSTawards.org, the submission was in a text box similar to the one we enter posts in here (except there's a counter to enforce the character limit), so I think a conventional multi-column set-up may be difficult to properly format. I'm not sure if it's possible or not; I just don't think you'd have an easy time of it.

The copies you print out to bring with you to competition can be formatted any way you want though.
Hope this helps.