Confidence is the magic key. As long as you show confidence in your body language, you will get given more chance to make friends, even if you are mute from being so shy.
I've just started a new voluntary job, and I feel very shy and socially nervous there (I have Social Phobia, self-diagnosed, but definately co-morbid to the AS I also suffer with), I still put on a confident front. Well, I have actually taught myself to be like this. I just get on with my work. I try not to think too much because too much thinking can cause more anxiety and hesitation. So I've also learnt to shut off all my word-thinking, and just concentrate on picture-thinking. Thinking in pictures is much less overwhelming than thinking in words, because usually when I think in words it's mostly my conscience doing all the thinking for me, which is where my Social Phobia comes from, because of too many irrational thoughts. So I'm trying my hardest to shut down my word-thinking, and just use it when I need to. Having a clear mind allows me to bring out more confidence on the outside, and showing a confident expression. So at my new voluntary job, I try not to say too much (because usually stupid things come out before I've gotten to know the person, and so then they're judging me before I've even let myself get to know them). So by being excessively shy, I can make myself out to just be a shy NT (because I don't stim or anything), and I just get on with my work without worrying too much about what other people are thinking. People can sense social fear, and so the less thinking I do, the less phobic expressions I give off. It's worked with dogs. When I was a child I was so afraid of dogs, and people always told me that dogs can sense fear, which is why they used to run after me all the time and jump up at me, so when I got in my early teens I suddenly stopped myself from being so afraid of them by telling myself that most dogs don't bite or attack, and so to this day it's been rare to have a dog jumping up at me because I've been able to walk past without showing any fear. So it's kind of working with people too. I'm testing it at this new voluntary job, and it's starting to work already.
Sorry this may seem a bit long and complicated to comprehend, but for those extrovert Aspies like myself who like to have friends and who like people, this is quite good advice for you. It can take a lot of work, so if you're really not too bothered about fitting in then don't try it. It'd just mess up your frame of mind. But if you really want to fit in well and be part of a team (you don't have to be popular but being generally liked and ''part of the crowd'' is good enough), you'd better get started now! Don't concentrate too hard on the social mistakes. This is what I've been doing too much throughout my life. Just concentrate more on what has just impressed the other person, and keep to that. Observing other people's behaviour too really works.
_________________
Female