In this video from C4Bimbos we learn how to cut a cantaloupe. This also works for a watermelon, she says. Slightly cut off each side - top and bottom - so that you can stand it up. Now you want to shave each side down. Using a sharp knife is the best way to go! Get all of the green part off. Now, turn it over to get the rest of the outside off. Now, cut it right in half. With a large spoon, scoop out all of the seeds and put them in a bowl. Cut the cantaloupe in perfect slices and you are ready to eat it!