How to cut selected image in adobe photoshop

*just remember all the previous steps to rectangular marquee  tool.
*select the magnetic lasso tool as shown in fig 109.

 

*if it is not shown then right click on the second cutting tool and select magnet lasso tool from it.
*left click of ur mouse from where u want to start marking. Move the cursor across the boundry of the mickey mouse. U will see that the image is automatic selected. If ur image is wrongly selected then press backspace key from your keyboard. It will deselected some portion. Now again start selecting portion by clicking some more left clicks.
*complete ur selected area in loop. If it is not completing automatically then take a double click.
*now press ctrl key and drag drop that image on the another image