1. Starting with your dominant hand in a "B" handshape. (Thumb extended, other fingers closed around it)
2. Moving your hand forward and down, as if you are pushing something away from you.
The movement should be smooth and fluid. You can also use your non-dominant hand to help emphasize the meaning.
Here are some additional things to keep in mind:
* Context matters. The sign for "believe" can have different meanings depending on the context. For example, you might use a different sign if you are talking about believing in God or believing in someone's story.
* Facial expressions are important. Your facial expression can help convey the meaning of "believe." For example, you might use a skeptical look if you don't believe something, or a trusting look if you do.
* Practice makes perfect. Like any language, learning sign language takes time and practice. The best way to learn is to find a qualified teacher or sign language class.
There are many resources available online and in libraries that can help you learn sign language. You can also find videos of sign language interpreters on YouTube or other websites.