Step #1
First commence the tutorial by making a circle, a triangle & four curve lines as shown.
Step #2
Draw outline for arms & chest shape as shown.
Step #3
Make outline for eyes & nose.
Step #4
Make face & eye brows.
Step #5
Draw hairs.
Step #6
Make arms.
Step #7
Make coat & tie shape as shown.
Step #8
Make hands, fingers & table shape as shown.
Step #9
Draw retinas, moustache and hairs outline.
Step #10
Finally, make necessary improvements to finish.