Do use the Date Picker - Input when precise date input is crucial for the user's task.
Do ensure the lead and trail icons are intuitive, aiding in the user's interaction rather than causing confusion.
Do provide clear placeholders for day, month, and year to guide the users.
Don't overcrowd the input with unnecessary elements. Keep the UI clean and user-centric.
Don't use the Date Picker - Input as a replacement for simpler text inputs where specific date input isn't necessary.
Don't neglect the different states of the input. Each state (hover, focus, success, error) should have clear visual feedback.