The icon and banners should be specifically for Wikipedia Preview as a product.
See https://developer.wordpress.org/plugins/wordpress-org/plugin-assets/ for image details.
@SGautam_WMF any more work to do here?
We can close this. Is it okay to close it from design doing channel or do we need to move it till end(product signonff)?
We can let @AMuigai have a final look at the icon and banner and resolve. https://wordpress.org/plugins/wikipedia-preview/