How to remove a background in
You have to use the Pen Tool. Pick up a stroke color. Make sure you
cancel fill color by selecting to “none” Start outlining the object with the Pen Tool. When you finish outlining the object, please first select the outline (with the Selection Tool) and then shift-click
to select the whole image. You should have the outline and the whole image both selected. Now control-click on Mac (or right-click on PC) and click on the Make Clipping Mask option from the drop-down menu and the background will disappear.