Can I create images for Merch by Amazon?
Yup! To create an image the correct size for Merch by Amazon, create a custom canvas size called Merch by Amazon and set the dimensions to: 2250x2700:
Once you've created your image and you're ready to download, make sure to choose PNG for Format, @2x / Retina option for Dimensions and then select Print (300dpi) for Media Type:
That's it! Your image is ready to be downloaded for use with Merch by Amazon.