You would draw the head first, the rest of the body would aline with the head.
Try using better paper and better marker and not crayola I recommend u use digital cuz u get variety of art supplys
Juan Gris's art was different from Picasso because he's art made you actually think on what you are looking at, while Picasso art was mostly about life,music,joy and etc. hope I helped!
That tool would be a Anemometer