after import image, to cut image:
- select image
- menu Object > Motive use set from Object to Motive
- put in front of image new rectangle with size of cut
- select image and rectangle
- Menu Layers > intersection
to appy gradient:
- create white rectangle with same size of image
- create gradient on rectangle
- put in front of image new rectangle
- center 2 objects (image and rectangle)
- Menu Object > Mask > set