If you need inspiration for your pocket square, you can try some of the following combinations: White shirt with light blue stripes, burgundy tie, light blue suit, and orange/blue pocket square White shirt with light gray stripes, light blue tie, charcoal suit, and white pocket square with blue tops Light blue shirt, burgundy tie, black suit, and light blue pocket square As for the watch, you can rarely go wrong with silver
And, you can make it in just a few minutes
Loafers are too casual for this event, and lace-up sneakers are an absolute no-no, so stick with elegant oxfords
If you need more ideas for what colors to mix with brown whether its tops or bottoms, check this post for more ideas