Step one:
First draw an oval shape as the bread slice.
Step 2:
Then draw a long oval on top as the sausage in the middle.
Step 3:
Then draw an arc, and use wavy lines to draw a little shape on both sides of the middle oval.
Step 4:
Also draw a curve inside the middle oval, and be careful to draw a double line as a salad.
Step 5:
Then on the bread slices, you can draw some small dots as sesame seeds.
Step 6:
Finally, apply a nice color and the hot dog is ready.