Photoshop mockup clipping mask guide

 Photoshop mockup pillow design

1) Open Pillow image

2) Copy and Paste Patter image on "Pillow image document"

3) Choose Multiply option from Layer Panel

4) Resize Pattern image

5) Apply Clipping Mask on pattern image

6) Press Ctrl key on keyboard and Click on Pillow layer

7) Select>Inverse

8) Edit>Clear 

or 

Press Delete key on keyboard