You should be able to find the pose you like easier this way. Keep the limbs of the body proportioned with the head, so that the head is not too big for the body. This stick figure is sort of like the skeleton of your anime boy.

As you did for the body, darken the lines you want to keep for the little details. Add a bridge and a tip to the nose. Longer strands at the base of the neck are very popular in recent animes.

Watercolor is recommended, but you can also use colored pencils.