Open the Personal Applications subpanel and click the Icon
Editor control.
Icon Editor starts with an empty drawing work area.
Other Ways to Start Icon Editor
You can also start Icon Editor and have it load an icon into
the work area in one of the following ways:
In a File Manager
view, locate the icon file and double-click on it to open it. (The
default action for pixmap and bitmap files runs Icon Editor and
loads the file.)
Drop an icon file on the Icon Editor control in
the Personal Applications subpanel.
Click the Application Manager control in the Front
Panel, then open Desktop_Apps and double-click on Icon Editor.