I decided to take photos of how I did it step by step, done in pencil
1. Start with a basic sketch
2. Draw the muscles of your body to start detailing
3. I started to detail the face and make your hair, for people with curly hair it is best to start drawing the shape in "S" from a point to form your hair
4.I start by making the shirt following the shape of the figure so that it does not go out of proportion
5. Then detailed the shirt
6. The same with the pants, I recommend that if they have bad draw the shirt use reference with shirts, and try to analyze how you see that object so you can draw with better technique