Step 2 On a new layer, using the Pen tool (P) start tracing the outline of your character; mastering the Pen tool within Illustrator is essential as it’s the most important tool. Draw a rough icing shape that is overlapping your doughnut, select them both and click on Edit > Copy then Edit > Paste in Front or (Cmd/Ctrl + F). Select Divide in the Pathfinder Palette, to delete the unwanted areas.
Step 3 We need to create the middle of our doughnut. Draw the centre part of the doughnut and copy this. Using the Selection tool (V), select the main doughnut and the hole and subtract from shape area in the Pathfinder (Alt + Click). Repeat this step for the icing.
Step 4 Select the Pen tool and ensure there is no fill but add a stroke width of around 2pt and click on Round Cap from the Stroke Palette. Now draw half of your character’s smile. Copy and paste in front, then right click and go to Transform > Reflect and select Vertical from the menu that appears. Adjust the two shapes and then with both selected, go to Object > Path > Outline Stroke.