Step one:
First draw a square, and then draw a square bar below.
Step 2:
Then draw a symmetrical curve below.
Step 3:
Below, connect them with a square.
Step 4:
Then draw vertical lines inside the upper and lower squares.
Step 5:
Draw a square label on the bottle, pay attention to the double lines.
Step 6:
Draw some ink on the bottom of the bottle and use curves to represent it.
Step 7:
Finally, apply a nice color and the ink bottle is ready.