Photoshop

useful commands on the Mac computer 

how to zoom in on the mac : cmd , - or +

screenshotting on mac : shift,cmd, 3 or 4

f means fill to screen

tab key means pallettes go away

if you want to get your pallettes back go on window then onto workspace and click essentials 

open up the other image 

cmd,c then cmd, ` then cmd, v 

non destructive editing 

then used the first layer of the image to edit ontop of layer 2 here is the result