Step one:
First draw a rectangle.
Step 2:
Then draw two more rectangles next to it.
The third step:
On top, draw a triangle or semicircle as the seal of the red envelope.
Step 4:
Some beautiful patterns or decorations can also be painted on the surface of the red envelope.
Step 5:
You can also add a little bit of stars around it for a shiny feeling.
Step 6:
Finally, paint it with a nice color, and the red envelope is ready.