When you say the “Sh” sound, your lips are rounded and your tongue is not going to touch anywhere in particular in your mouth. Your tongue is kind of just floating and should not touch up against your teeth.

Many people struggle to pronounce “W'' and “V” in American English because these letters make completely different sounds in their primary language. For example, “W'' and “V” are allophones in the Hindi language, but they are not in English.

If you speak English as your second language or you are in the process of learning English right now, you might find some sounds in the language are harder to say than others. One of these sounds is “TH.” It's spelled as TH, but it is pronounced as a voiceless sound in American English.

Learning to pronounce letters in American English while speaking it as a second language is very challenging, especially if the letter has a completely different pronunciation in your primary language.