It's also important to be able to get into the mind of the artist whose work you are conserving and not let your own tastes and desires to rule your mind and hand.
Take your sense of interpreting the artist's work with a grain of salt, but value their work more than you take pride in your own skills. The more skilled you are as a draftsman and a painter, etc., the better you will be. Chemistry is a very important topic. And if you have ever worked in a museum, you know that library sciences are also deemed important. Also, know that working in a museum, you will be dealing with a hard and fast hierarchy. You need to learn to work within it smoothly. --Jabbadah.