Armor and Weapon Enhancement

Your odds for a successful enhancement is greatly influenced by your skill level. The higher your level of either Tailoring or Blacksmithing, the better your chances will be. The legendary 120 skill level of the particular craft is recommended.
 * If you find an item with high luck, you can improve the luck +40 by successfully enhancing it with Spined Leather if it's a leather item or Gold Ingots if it is made of metal.
 * If you have a weapon with a high strength requirement or with a low durability and you would like to make it more durable or usable by a character with lower strength than is required, you should definitely choose Dull Copper ingots. Successfully enhancing with them will cut the strength requirement in half and will significantly increase the durability.

A high level of Arms Lore, preferably GM, can also increase your odds significantly. Other factors that will help you succeed are:
 * making sure your character is well fed prior to beginning and occasionally snacking if you have many items to enhance.
 * using a Talisman with the appropriate skill boost of either Tailoring or Blacksmithing. One that provides a boost to your skill and your chance for an exceptional item is the better choice.