To create an envelope, Note
In the Publication Types list, click Envelopes. In the center pane, click the design you want.
In the right pane, under Customize, select the Color scheme, Font scheme, and Business information.
Under Options, select the Page size and whether to include a logo image. Then click Create.
To edit a logo and add it to the Content Library, Adding Items to the Content Library
On the Objects toolbar, click the Design Gallery Object button, and in the left pane of the Design Gallery, click Logos. If necessary, enlarge the gallery window by dragging its border so you can see the logos in the center pane.
In the center pane, click the style of logo you want to create, set any other options ...