Garnish with cut-up additional watermelon.
How to Select a Watermelon
Choose a watermelon that has a smooth, waxy surface and a creamy-colored underside. If the underside is white or greenish, the watermelon is not ripe. Hearing a thud when you tap the watermelon slightly with the palm of your hand is another sign of ripeness. If you hear a ringing sound, the melon is not ripe.