To add collection images to your app, follow the instructions below:
Step 1 – Log into your Shopify Dashboard — Click Products — then click Collections and then click into the collection you want to edit.
Step 2 – Find the box that says “Collection Image” and click Upload Image for the image you want to feature. This will then update on the app in real time. Keep in mind that if your Shopify theme displays collection images, this will be reflected on your site as well.
Make sure that your products and collections have high-quality images. We highly recommend that you use lifestyle images in your collections and products.
Here is a comparison:
As you can see, there is a glaring difference between the two. The same product is far more appealing when placed in a normal setting rather than having a standalone product image. Giving the audience an idea of how the product will be used in day-to-day activities increases engagement and conversions. Adding lifestyle images that fit your brand makes your app feel more human. Shopify has a comprehensive guide for lifestyle images here.