Hi Disbelievin'.
I see that you had joined in 2nd week of July last year, so I just welcome you back after not seeing you for awhile.
You need to be more relaxed and not to send out any negative messages. Don't be a people pleaser and the best thing thing is to ask questions, not too many though. You have to take a balanced approach when making new friends.
You need to consider that whoever you meet, may have friends from the past and still are that person's friends. As a newcomer, you have to make sure that you don't misinterpret things. And that person may not say anything before she/he wants to belong to the group. Just ask if you could join the group if ever you find a new acquaintance seems to be drifting away to the popular she/he wants to be in.
I hope you stay around because there are resources here that will help you feel more confident. In that way, if you can take to heart the advice in Steps to Better Self Esteem forum, then you may find making friends easier. The goal would be to have the confidence that attracts others to you.
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I get fed, don't worry.

(Buddy putting in his 2bits worth)