Draw a simple oval for the head
Add a vertical center line and a horizontal eye line
Sketch the helmet shape around the oval
Draw the eye slits as slanted rectangles
Add the mouth slit as a small horizontal shape
Outline the neck and upper torso
Draw the chest armor as a broad, angular shape
Add the arc reactor circle in the center of the chest
Sketch the shoulder armor on both sides
Draw the upper arms with segmented armor plates
Add the forearms with angular panel lines
Draw the gauntlets and palm repulsor circles
Sketch the lower torso and waist armor
Draw the legs with strong, tapered armor shapes
Add the knee plates and shin armor
Draw the boots with angular ends
Refine all armor edges and symmetry
Add panel lines and small mechanical details
Erase construction lines
Ink the final outline
Color the suit red and gold
Color the eye slits and arc reactor white or blue