* The most common sign for peace is a combination of the signs for "no" and "war". This is done by making a "T" shape with your dominant hand, then moving your hand across your throat, then making a "V" shape with your other hand, and moving it across your chest. This sign represents the idea of stopping war.
* Another option is to use the sign for "quiet". This is made by holding your dominant hand flat, palm facing inwards, and moving it across your chest in a sweeping motion.
It's important to remember that sign language is visual, so the context and facial expressions are important.
If you're interested in learning more about BSL, there are many resources available online and in your local community.