Descriptions
Provide alternative labels for all key interface elements.
Describe meaningful images.
Make charts and other infographics fully accessible.
Exclude purely decorative images from VoiceOver.
Navigation
Use titles and headings to help people navigate your information hierarchy.
Specify how elements are grouped, ordered, or linked.
Inform VoiceOver when visible content or layout changes occur.
Support the VoiceOver rotor when possible.
Platform considerations
visionOS
Be mindful that custom gestures aren’t always accessible.
For the complete guidance, including worked examples and illustrations, see the canonical page: https://developer.apple.com/design/human-interface-guidelines/voiceover