改变阴影 meaning in English

shadow change

First of all you have a canvas instead of a piece of paper . in addition to having a canvas you have a medium that you can continue to shape . if the color isnt just right you can make it darker or lighter or you can change the shading or the brightness
至于油彩，首先，你要用画布，而不是画纸除了用画布外，你用的媒介是可以不断塑造的，若颜色不对，可以使它变得更深色，或可以加点白色，使它变得更浅色，或你可以改变阴影可以改变亮度，可以改变色调。