I tried finding this question posted but couldn't seem to find exactly what I was looking for. I'm trying to modify a Mobile UI Mockup that I did in another application, I want to place it on top of a screen on a phone at an angle which involves screwing the imported image in Affinity Designer. I know you can get this effect using 'convert to curves' with a vector shape but I can't seem to find anything equivalent for imported JPEG or PNG images.
I included pictures in a couple of links, as an example of what I'm trying to accomplish, in case I'm not being very clear. Any help with this would be very much appreciated! I'm sure I saw this being done in Affinity Photo but can't figure it out in Designer unfortunately.
http://designshack.net/wp-content/uploads/iphone-mockup-psds-24.jpg
http://visionwidget.com/images/2016/0123/Isometric_Perspective_MockUp.jpg
Thanks very much!