An iron sword design is an item required to make Iron ceremonial swords in the Artisans Workshop. They require 75 Iron ores to be made. These iron ores should then be deposited in the smelter, and smelted to an ingot. This ingot could then be used on the furnaces next to the anvils to get an Iron ingot (heated). This heated ingot could then be used on the anvil, and hammered to the correct shape, to make a Ceremonial sword. Then you should go to Abel and Egil to let them rate the sword. This rating decides how much experience you will get, which is the only reward for this performance.