If you are looking for a simple product that doesn’t have a lot of fuss and can highlight your project, this square paper mockup will be your ideal choice. The narrow shadow drawn along this product can make it a substitute for envelope mockups and even show their back view.
It all depends on your creativity! This is where you should download the PSD file and display your projects in minimal space. If you are interested in these options and want to be constantly updated, add Resource Boy to your bookmark.