The round, green watermelon sits invitingly on the page, perfectly framed by its thin white rind. It looks juicy and sweet with its red interior, scattered with small black edible seeds. I recommend adding shades of pink to the inner red portions to create a realistic look, as well as adding some yellow and pink highlights to the rind for a brighter and more vibrant look. The seeds can be shaded in either brown or grey, giving them a realistic and edible look. Finally, add shades of green to the outside of the watermelon, creating a lifelike effect.