The interpretation of seeing a canvas in your dream is related to your potential and possibilities, especially if the canvas is white. Consider the significance of what is on the canvas, because it is an aspect of your subconscious.
You may look in dreams interpretation for other symbols :
Captain : The interpretation of dreaming that you are a captain is that you recognize your emotions and you are ready to confront the problems that bother you. The interpretation ... tml">>
Captive : The interpretation of dreaming that you are kept in captivity is that you feel trapped, bound in some aspect or circumstances of your real life. You can be captive ...