Draw a corn ear form, then sideways leaves and erase unnecessary lines.
Dorisovyvayem leaves and a bottom of corn, then very hardly noticeable lines we differentiate finding of seeds.
Draw corn seeds from below up, from below — only part, then whole, try to do them by more rectangular with roundish edges, to top reduce the size of seeds. Also we add a number of seeds nearby.
Now we draw seeds, from above on each side and they will be edge more oval.
Shade a pencil sites between seeds and leaves.
Watch still currant, strawberry, potato, bread.