Step 1: Open ps, create a new file with parameters of 500 times 500, and click OK.

Step 2: Select the ellipse tool and draw an ellipse with yellow background and black brush strokes in the document, as shown below.

The third step is to draw an eye (flat ellipse) on this circle with the ellipse tool, and then press alt to copy one. As shown below.

Step 4, in order to draw smiling lips, choose the pen tool.

Step 5, use the pen tool to create a new anchor point in the circle and draw the following picture.

Step 6, change the filling color of lips to none, the stroke is black, and the stroke size is 2 points. The following figure

Step 7 Create a new layer, then select the pen tool and draw the following figures on both sides of the corners of the mouth.

Step 8: press alt key, copy the picture just drawn, and turn it over with Ctrl+t,

The ninth step is to adjust the position and smile. When we chat, we can save it as an expression.