To create a new image
(Photoshop创建一张新图)

Use the New command to create a new, blank image. （使用新建命令去创建一张新的空白的图。）If you’ve copied a selection to the clipboard, the image dimensions and resolution are automatically based on that image data.（如果这之前你复制了一张图，这张新图的大小将自动套用其大小。）
Choose File > New.（选择文件>新建）
If desired, type a name for the image, and set the width and height.（如果需用，可为其输一个名字，和设置它的宽和高。）
(Photoshop) To match the width and height of the new image to that of any open image, choose a file name from the bottom section of the Windows menu.（想让新图与一张已经打开的图一样大小，可以在下部的菜单中选择已经打开的图的名字。）
(Photoshop) Set the resolution and mode.
Select an option for the contents of the background layer (Photoshop) or first layer (ImageReady) of the image:
White Fills the background or first layer with white, the default background color.
Background Color Fills the background or first layer with the current background color.
Transparent Makes the first layer transparent, with no color values. The resulting document has a single, transparent layer as its contents.
Under Advanced, choose a color profile, or choose Don’t Color Manage This Document. For Pixel Aspect Ratio, choose Square unless you’re using the image for video. In that case, choose another option to use non-square pixels.
When you finish, you can save the settings as a preset by clicking Save Preset, or you can click OK to open the new file.