Example:
inspect katana
You think you'd need to be versed in long blades to use this effectively.
Your unpracticed eye lends you no idea how you'd need to train your body to use it well.
Your practice with long blades tells you that you'd need a good sense of technical intelligence to use it well.
Your extensive long blades knowledge tells you that you'd need a good sense of technical intelligence and some luck to use it well.
Your expertise in long blades tells you that you'd need a good sense of technical intelligence, some luck, and a decent amount of strength to use it well.
Your utter mastery of long blades tells you that you'd need a good sense of technical intelligence, some luck, a decent amount of strength, and a good sense of coordination to use it well.
As per your level of experience, depending on how many stats are needed to use the weapon well.