Originally Posted by XPL1C1T GAM3R
what do the postcards look like because i dont know what to look for and ive been to the places on the list ?
They're large, white with a few scribbles on and rectangular. If you take a look at the 2 videos posted on the main site guide, then you'll get to actually see them. Here's the link: Click.
Plus, make sure you've actually gone to Lizzie and started the Postcard Hunt mission. After that they should appear, and you can still do other missions after you've been and activated the hunt.