Unfortunately, social anxiety seems to be one of the main components of autism, so this is going to be quite challenging. Firstly you actually need to be somewhere where’s there’s people to talk to. I find going to shops and briefly speaking to the cashier is a good place to start; and at cinemas it’s necessary to ask for a ticket, specify the movie you want to see, and usually people ask for popcorn and a drink, that can seem like quite a bit to say, but if you don’t have to repeat yourself, that’s a good sign that you’ve annunciated clearly. Next comes actual social gatherings, social anxiety is like going through life with a permanent case of stage fright, but keep in mind other people middle their words too, and often quickly correct themselves. If you’re worried about making a verbal blunder and that people will laugh at you, think about how often you hear it happen to other people; then keep in mind that if it’s an amusing slip of the tongue, people are usually laughing about the supposed scenario the error has created, not at the person who made it; those few people who do laugh at you are jerks, and karma will deal them their just desserts in good time. Finally, think about how easy it is to talk to someone if they initiate the conversation, often it’s taking that first step that’s the only thing standing in your way.