Do’s:

Facial exercises can be performed at home.
You need to be patient and work the muscles gently.
You should go through the exercises not less than three times each day.
Repetitions & frequency of exercises should be modified according to improvement status.
Pay attention to your face as you exercise – focus on watching and feeling what the good side is doing, and then mentally visualize it on the Bell’s palsy side and try to recreate it in tiny increments.
Exercise in short sessions, but increase the frequency of exercises, more if you can. Quantity is not as important as the quality, so don’t do your exercises when you’re tired. It’s better to exercise correctly just a few times than to do it incorrectly many times.

Don’t:

When performing these exercises, you should not exert yourself or worry much about whether you are successfully completing all of them.
Don’t force things to the point that the two sides pull against each other. If you see a motion pulling other muscles that shouldn’t be moving, back off a little, and freeze it at that point, and relax the muscles that shouldn’t be moving.