I start with a basic sketch. I draw the pose I roughly want.
Then I draw the 'clothes' and more details.
Here I corrected the legs (it's still a bit off...) and started to draw finer lines.
Then I started to draw with smooth black lines. I also worked with the thickness of the lines.
Finally I add more details. All I have to do now is colour it! (But I'm too lazy for that...)