There are many tools and platforms that can help you to create/find images to use for your designs. Choose what's right for you.
Sell Design studio tool
With Sell Design Studio Tool, you can place your preferred image on the product label, change the background color, and add texts in different fonts. That's a perfect all-in-one tool for beginners!
Learn more about how to create a product on Sell.xyz with Sell Design Studio.
Online graphic design platforms
There are many online graphic editors that can help you create high-quality images. Usually, these platforms also have free templates that you can freely use for your design.
Some of the best online graphic design platforms:
You can find images for your designs on image libraries and download them for free (or for a small payment depending on the platform and image).
The best stock image libraries:
Adobe Photoshop or Illustrator
If you want to use more advanced design tools, you can download source files and create a custom product design using Photoshop and Illustrator.