In UIKit you can create keyboard shortcuts by overriding the keyCommands for your view controller, which is an array of UIKeyCommand. A bit of a different approach to how you'd do it with SwiftUI.
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Adding keyboard shortcuts in your SwiftUI apps is extremely easy. Just use the .keyboardShortcut(_:) modifier. When pressing and holding the command key, the shortcut will appear in the shortcuts list.
If an image does not convey additional information, maybe it's just used to make the UI look more attractive, it makes sense for VoiceOver to skip it. UIKit: set isAccessibilityElement to false. SwiftUI: create a decorative image explicitly.
Support both orientations, if possible. I know not even iOS itself does it, but it hasn't always been like that. You'll create a more robust UI that will be easier to port to iPadOS. And especially, don't force your users to rotate their devices.
