If all you are looking after is a high-quality mockup, you need to check this one out. Focus on your design ideas, and don’t worry about the resources. Leave that to your ResourceBoy. With this mockup, you can use share packaging designs for different stuff, like salt, coffee, and other beans etc.
However, it’s a freebie product, it comes in a resolution of 4000 x 3000 px that delivers you high-end results. It’s as easy as it gets. Just, download the layered PSD file of this paper pouch mockup and simply add your own packaging designs to it via the smart layers. Good Luck.