There are a few things you need to know if you want to cut out an object in Photoshop. First, make sure that the object you want to cut out is a layer. Second, make sure that the object is selected. Third, use the command “line” (L) to select the entire object and then use the “line tool” (T) to draw a line across the top of the object. Finally, use the “point tool” (P) to make small points on top of the line and then press “enter” to create a new line.