Deep Plane Facelift and Necklift Failure - Necrosis and Right side Palsy. When can I have a revision? (Photos)

It may not be safe to do any revision after necrosis and nerve damage. If your nerves are improving, I would avoid any surgery.

Really depends on your tension of your tissues. If your surgeon removed alot of skin and there is not enough to avoid tension, you may want to wait past a year. if your surgeon only removed skin, often times a deep plane approach will lift up the deeper tissue and help with repositioning scars. Make sure you see an experienced surgeon.

Waiting at least a year would be the best option and having and in person consultation where your surgeon can examine your skin and see how much of an improvement can be done if you were to consider another facelift.
The scarring around the ears can be improved if you have enough looseness in your skin or you can try steroid injections or laser skin resurfacing.
The palsy is a concern and would have to be discussed with your surgeon.