Mockups are a great way to showcase your pattern. I used my pictures and tried to make them as realistic as possible, though I found it a bit more difficult since my patterns has a dark, purple background, so I had to use for the mockup photos with quite dark base for it to work.
Here are my results:
I used it on my purse:
A cute pair of socks:
Some tableware:
And a bra:
I had so much fun working on this mockups!