One is to draw a figure along the edge of the figure with Bessel tool (or pen tool), and then color it according to the picture.

Second, right-click the picture and trace the bitmap. There are many options in the submenu, which you can choose according to your own needs (the premise of this function is that your picture has no complex background, good graphics pixels and single color).

It is recommended not to edit Jpg format pictures with CDR, and PS software is the best.