1.Prepare markers, pencils, colored pencils, erasers and cardboard.

2. Draw an ellipse first, then connect this ellipse with a straight line so that the outline of the watermelon comes out.

3. Next draw the rind, connect it with a curved line, and then draw the watermelon seeds on the flesh of the melon, the position can be arbitrary, the shape of the drawing more uniform. Finally, color the watermelon, so a watermelon sketch is complete.

Watermelon (scientific name: Citrullus lanatus? (Thunb.) Matsum. et Nakai) annual trailing vine; stems and branches stout, with obvious ribs. Tendrils stout, pubescent, petiole thick, densely pilose; leaf blade papery, triangular-ovate in outline, whitish green, both surfaces hispidulous, leaf blade base cordate. Monoecious.

Female and male flowers are borne singly in the leaf axils. Male flowers: pedicel 3-4 cm long, densely yellow-brown villous; calyx tube broadly campanulate; corolla yellowish; stamens nearly free, filaments short, anther locules folded. Female flowers: calyx and corolla as in male; ovary ovate, stigma reniform. Fruit large, subglobose or ellipsoid, fleshy, juicy, pericarp smooth, colored and ornamented in various ways. Seeds numerous, ovate, black, red, smooth on both sides, base obtuse-rounded, usually slightly arched at the margin, flowering and fruiting in summer.