Draw out these guidelines. Use a circle for the top of the head and for the shoulders. The bottom jaw is a triangle and the hand is a rounded rectangle.
Begin to draw in his hair by starting with the basic bangs. Note that his head is tilted and that his hair falls to the right. Draw in his small ear on the right and begin to draw his collar.
Finish up the top of the head and the rest of the falling strands. Then draw in the bigger part of the collar/shirt. Make sure the the top of the shirt reached from one shoulder to another.
Draw in the shoulders as shown. Then begin to draw the edges of the armor on both shoulders.
Draw more of the armor on both sides. Then there's one of the most important parts: drawing the hand and sleeve. Make sure the arm is of a good width and that the hand looks realistic. You can always use your real hand as a guide- which is exactly what helps me out! :)
Finish both arms and the torso and add in a few detail/design lines where they belong.
Draw the face. Two small slits for the eyes are prefect and another two for the mouth complete the simple face. Don't forget the lightning scar on the right side. And add the three buttons: two on the sleeves and one on the shirt itself.
Erase all the blue guidelines EXCEPT the ones that form the jaw. Then you add in a few more design lines as seen in red.
When you finish all the details, here is what your finished picture should look like. You can color it in if you wish and now you know how to draw Allen! Don't forget to comment and rate! ^_^