Modify your armor or weapon appearance as desired by going to "Craft Armor/Weapon" While the dialog box is still open, save the game. When you load this game again, your character will not be able to move but will have the desired appearance. Rest, and when you are done, you will be free to move with your new armor without any cost. This also works even if your armor crafting skill is 0 and the armor crafting difficulty is much higher than what you could possibly achieve.