Practice parting your lips in front of a mirror. You should be able to breathe normally and see your teeth ever so slightly.
Don’t grind your teeth against each other. Instead, let them sit together comfortably. Your jaw should be relatively relaxed.
If your tongue can’t move, you may need to relax your jaw a little bit and part your teeth a little bit.
If you can see your tongue, or see it moving around, you’ll need to position your teeth so they hide your tongue. [7] X Research source
A, C, D, E, G, H, I, J, K, L, N, O, Q, R, S, T, U, X and Z. [9] X Research source In general, vowel sounds are easier to say with a closed mouth than consonants.
D for B “Eth” for F N for M T for P “Thee” for V O for I W and Y[10] X Research source
Make a list of easy and difficult words and repeat them 10 to 20 times each – or until you feel comfortable saying them. Then, move on to new words.
Since “f” is difficult to say, with “fishing,” say “th-ish-ing. ” Say the “ing” loud. [12] X Research source
Instead of saying “agreeable,” say “compliant. ” Instead of saying “adorable,” say “darling. ” Instead of saying “comfortable,” say “contented. ”[13] X Research source
Start with a simple sentence like “Hi, my name is John and I am from Nebraska. ” Move on to tougher sentences like “I believe that running is one of the most effective ways to exercise. ”[14] X Research source
Consider giving a speech with your mouth closed. For example, work on Abraham Lincoln’s “Gettysburg Address. ”
Try to hold a normal conversation with your friends. Talk about various subjects and let them ask you questions. Invite friends and family to watch you talk with your mouth closed. Get a ventriloquist dummy or puppet and hone the art of ventriloquism.
Use your cellphone or a tape recorder to record yourself.