Yoana will thank you for your trust and tell you to come back next day to collect your armor. With this test, the General will see that Yoana has the right skills and will order Fergus to hand over the forge to her.
The General will shoot from the crossbow at both of you, and of course only you will get out of this test unscathed. You wear the armor made by Yoana, and some villager will wear the armor made by Fergus. Yoana will ask for your help and you have to agree, otherwise the quest will end in failure.
The General won't want to believe that her armor is better than the one made by Fergus and will demand a test. When the general arrives to collect his armor, then Yoanna will show him the armor she made. Then she'll finish the armor for the general.
